diff --git a/core/MAINTAINERS.txt b/core/MAINTAINERS.txt
index 2b6f2cc..6d52529 100644
--- a/core/MAINTAINERS.txt
+++ b/core/MAINTAINERS.txt
@@ -206,6 +206,10 @@ Database Logging module
 Edit module
 - Wim Leers 'Wim Leers' http://drupal.org/user/99777
 
+Entity Reference module
+- Amitai Burstein 'Amitaibu' http://drupal.org/user/57511
+- Andrei Mateescu 'amateescu' http://drupal.org/user/729614
+
 Field module
 - Yves Chedemois 'yched' http://drupal.org/user/39567
 - Barry Jaspan 'bjaspan' http://drupal.org/user/46413
diff --git a/core/lib/Drupal/Core/Entity/Field/Type/EntityReferenceItem.php b/core/lib/Drupal/Core/Entity/Field/Type/EntityReferenceItem.php
index 6c4a6fc..1b9f53e 100644
--- a/core/lib/Drupal/Core/Entity/Field/Type/EntityReferenceItem.php
+++ b/core/lib/Drupal/Core/Entity/Field/Type/EntityReferenceItem.php
@@ -2,19 +2,18 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Entity\Field\Type\EntityReferenceItem.
+ * Contains Drupal\Core\Entity\Field\Type\EntityReferenceItem.
  */
 
 namespace Drupal\Core\Entity\Field\Type;
 
-use Drupal\Core\Entity\Field\FieldItemBase;
-use InvalidArgumentException;
+use \Drupal\Core\Entity\Field\FieldItemBase;
 
 /**
- * Defines the 'entityreference_field' entity field item.
+ * Defines the 'entity_reference' entity field item.
  *
- * Available settings (below the definition's 'settings' key) are:
- *   - entity type: (required) The entity type to reference.
+ * Required settings (below the definition's 'settings' key) are:
+ *  - target_type: The entity type to reference.
  */
 class EntityReferenceItem extends FieldItemBase {
 
@@ -28,36 +27,36 @@ class EntityReferenceItem extends FieldItemBase {
   static $propertyDefinitions;
 
   /**
-   * Implements ComplexDataInterface::getPropertyDefinitions().
+   * Implements \Drupal\Core\TypedData\ComplexDataInterface::getPropertyDefinitions().
    */
   public function getPropertyDefinitions() {
     // Definitions vary by entity type, so key them by entity type.
-    $entity_type = $this->definition['settings']['entity type'];
+    $target_type = $this->definition['settings']['target_type'];
 
-    if (!isset(self::$propertyDefinitions[$entity_type])) {
-      self::$propertyDefinitions[$entity_type]['value'] = array(
+    if (!isset(self::$propertyDefinitions[$target_type])) {
+      self::$propertyDefinitions[$target_type]['target_id'] = array(
         // @todo: Lookup the entity type's ID data type and use it here.
         'type' => 'integer',
         'label' => t('Entity ID'),
       );
-      self::$propertyDefinitions[$entity_type]['entity'] = array(
+      self::$propertyDefinitions[$target_type]['entity'] = array(
         'type' => 'entity',
         'constraints' => array(
-          'entity type' => $entity_type,
+          'entity type' => $target_type,
         ),
         'label' => t('Entity'),
         'description' => t('The referenced entity'),
-        // The entity object is computed out of the entity id.
+        // The entity object is computed out of the entity ID.
         'computed' => TRUE,
         'read-only' => FALSE,
-        'settings' => array('id source' => 'value'),
+        'settings' => array('id source' => 'target_id'),
       );
     }
-    return self::$propertyDefinitions[$entity_type];
+    return self::$propertyDefinitions[$target_type];
   }
 
   /**
-   * Overrides FieldItemBase::setValue().
+   * Overrides \Drupal\Core\Entity\Field\FieldItemBase::setValue().
    */
   public function setValue($values) {
     // Treat the values as property value of the entity field, if no array
@@ -68,8 +67,8 @@ public function setValue($values) {
 
     // Entity is computed out of the ID, so we only need to update the ID. Only
     // set the entity field if no ID is given.
-    if (isset($values['value'])) {
-      $this->properties['value']->setValue($values['value']);
+    if (isset($values['target_id'])) {
+      $this->properties['target_id']->setValue($values['target_id']);
     }
     elseif (isset($values['entity'])) {
       $this->properties['entity']->setValue($values['entity']);
@@ -77,9 +76,17 @@ public function setValue($values) {
     else {
       $this->properties['entity']->setValue(NULL);
     }
-    unset($values['entity'], $values['value']);
+    unset($values['entity'], $values['target_id']);
     if ($values) {
-      throw new InvalidArgumentException('Property ' . key($values) . ' is unknown.');
+      throw new \InvalidArgumentException('Property ' . key($values) . ' is unknown.');
     }
   }
+
+  /**
+   * Overrides \Drupal\Core\Entity\Field\FieldItemBase::get().
+   */
+  public function get($property_name) {
+    $property_name = ($property_name == 'value') ? 'target_id' : $property_name;
+    return parent::get($property_name);
+  }
 }
diff --git a/core/modules/comment/comment.admin.inc b/core/modules/comment/comment.admin.inc
index b9d34a6..0418b1d 100644
--- a/core/modules/comment/comment.admin.inc
+++ b/core/modules/comment/comment.admin.inc
@@ -124,7 +124,7 @@ function comment_admin_overview($form, &$form_state, $arg) {
         'data' => array(
           '#type' => 'link',
           '#title' => $node_title,
-          '#href' => 'node/' . $comment->nid->value,
+          '#href' => 'node/' . $comment->nid->target_id,
         ),
       ),
       'changed' => format_date($comment->changed->value, 'short'),
@@ -293,7 +293,7 @@ function comment_confirm_delete($form, &$form_state, Comment $comment) {
   return confirm_form(
     $form,
     t('Are you sure you want to delete the comment %title?', array('%title' => $comment->subject->value)),
-    'node/' . $comment->nid->value,
+    'node/' . $comment->nid->target_id,
     t('Any replies to this comment will be lost. This action cannot be undone.'),
     t('Delete'),
     t('Cancel'),
@@ -312,5 +312,5 @@ function comment_confirm_delete_submit($form, &$form_state) {
   // Clear the cache so an anonymous user sees that his comment was deleted.
   cache_invalidate_tags(array('content' => TRUE));
 
-  $form_state['redirect'] = "node/{$comment->nid->value}";
+  $form_state['redirect'] = "node/{$comment->nid->target_id}";
 }
diff --git a/core/modules/comment/comment.api.php b/core/modules/comment/comment.api.php
index cb4133d..793d9ad 100644
--- a/core/modules/comment/comment.api.php
+++ b/core/modules/comment/comment.api.php
@@ -34,7 +34,7 @@ function hook_comment_presave(Drupal\comment\Comment $comment) {
  */
 function hook_comment_insert(Drupal\comment\Comment $comment) {
   // Reindex the node when comments are added.
-  search_touch_node($comment->nid->value);
+  search_touch_node($comment->nid->target_id);
 }
 
 /**
@@ -45,7 +45,7 @@ function hook_comment_insert(Drupal\comment\Comment $comment) {
  */
 function hook_comment_update(Drupal\comment\Comment $comment) {
   // Reindex the node when comments are updated.
-  search_touch_node($comment->nid->value);
+  search_touch_node($comment->nid->target_id);
 }
 
 /**
diff --git a/core/modules/comment/comment.module b/core/modules/comment/comment.module
index 3bcabfe..fb10649 100644
--- a/core/modules/comment/comment.module
+++ b/core/modules/comment/comment.module
@@ -933,7 +933,7 @@ function comment_links(Comment $comment, Node $node) {
       );
       $links['comment-reply'] = array(
         'title' => t('reply'),
-        'href' => "comment/reply/{$comment->nid->value}/{$comment->id()}",
+        'href' => "comment/reply/{$comment->nid->target_id}/{$comment->id()}",
         'html' => TRUE,
       );
       if ($comment->status->value == COMMENT_NOT_PUBLISHED) {
@@ -955,7 +955,7 @@ function comment_links(Comment $comment, Node $node) {
       }
       $links['comment-reply'] = array(
         'title' => t('reply'),
-        'href' => "comment/reply/{$comment->nid->value}/{$comment->id()}",
+        'href' => "comment/reply/{$comment->nid->target_id}/{$comment->id()}",
         'html' => TRUE,
       );
     }
@@ -1310,7 +1310,7 @@ function comment_user_cancel($edit, $account, $method) {
     case 'user_cancel_reassign':
       $comments = entity_load_multiple_by_properties('comment', array('uid' => $account->uid));
       foreach ($comments as $comment) {
-        $comment->uid->value = 0;
+        $comment->uid->target_id = 0;
         comment_save($comment);
       }
       break;
@@ -1345,7 +1345,7 @@ function comment_access($op, Comment $comment) {
   global $user;
 
   if ($op == 'edit') {
-    return ($user->uid && $user->uid == $comment->uid->value && $comment->status->value == COMMENT_PUBLISHED && user_access('edit own comments')) || user_access('administer comments');
+    return ($user->uid && $user->uid == $comment->uid->target_id && $comment->status->value == COMMENT_PUBLISHED && user_access('edit own comments')) || user_access('administer comments');
   }
 }
 
@@ -1548,7 +1548,7 @@ function comment_preview(Comment $comment) {
     }
 
     if (!empty($account->uid)) {
-      $comment->uid->value = $account->uid;
+      $comment->uid->target_id = $account->uid;
       $comment->name->value = check_plain($account->name);
     }
     elseif (empty($comment->name->value)) {
@@ -1564,7 +1564,7 @@ function comment_preview(Comment $comment) {
     $preview_build['comment_preview'] = $comment_build;
   }
 
-  if ($comment->pid->value) {
+  if ($comment->pid->target_id) {
     $build = array();
     $comment = $comment->pid->entity;
     if ($comment && $comment->status->value == COMMENT_PUBLISHED) {
@@ -1653,7 +1653,7 @@ function template_preprocess_comment(&$variables) {
   $variables['permalink'] = l(t('Permalink'), $uri['path'], $uri['options']);
   $variables['submitted'] = t('Submitted by !username on !datetime', array('!username' => $variables['author'], '!datetime' => $variables['created']));
 
-  if ($comment->pid->value) {
+  if ($comment->pid->target_id) {
     // Fetch and store the parent comment information for use in templates.
     $comment_parent = $comment->pid->entity;
     $account_parent = comment_prepare_author($comment);
@@ -1708,14 +1708,14 @@ function template_preprocess_comment(&$variables) {
   if ($variables['new']) {
     $variables['attributes']['class'][] = 'new';
   }
-  if (!$comment->uid->value) {
+  if (!$comment->uid->target_id) {
     $variables['attributes']['class'][] = 'by-anonymous';
   }
   else {
-    if ($comment->uid->value == $variables['node']->uid) {
+    if ($comment->uid->target_id == $variables['node']->uid) {
       $variables['attributes']['class'][] = 'by-node-author';
     }
-    if ($comment->uid->value == $variables['user']->uid) {
+    if ($comment->uid->target_id == $variables['user']->uid) {
       $variables['attributes']['class'][] = 'by-viewer';
     }
   }
diff --git a/core/modules/comment/comment.pages.inc b/core/modules/comment/comment.pages.inc
index e333dd7..da359a4 100644
--- a/core/modules/comment/comment.pages.inc
+++ b/core/modules/comment/comment.pages.inc
@@ -59,7 +59,7 @@ function comment_reply(Node $node, $pid = NULL) {
         if ($comment->status->value == COMMENT_PUBLISHED) {
           // If that comment exists, make sure that the current comment and the
           // parent comment both belong to the same parent node.
-          if ($comment->nid->value != $node->nid) {
+          if ($comment->nid->target_id != $node->nid) {
             // Attempting to reply to a comment not belonging to the current nid.
             drupal_set_message(t('The comment you are replying to does not exist.'), 'error');
             drupal_goto("node/$node->nid");
@@ -121,7 +121,7 @@ function comment_approve($cid) {
     comment_save($comment);
 
     drupal_set_message(t('Comment approved.'));
-    drupal_goto('node/' . $comment->nid->value);
+    drupal_goto('node/' . $comment->nid->target_id);
   }
   throw new NotFoundHttpException();
 }
diff --git a/core/modules/comment/comment.tokens.inc b/core/modules/comment/comment.tokens.inc
index ec56287..715b63d 100644
--- a/core/modules/comment/comment.tokens.inc
+++ b/core/modules/comment/comment.tokens.inc
@@ -131,13 +131,13 @@ function comment_tokens($type, $tokens, array $data = array(), array $options =
           break;
 
         case 'name':
-          $name = ($comment->uid->value == 0) ? config('user.settings')->get('anonymous') : $comment->name->value;
+          $name = ($comment->uid->target_id == 0) ? config('user.settings')->get('anonymous') : $comment->name->value;
           $replacements[$original] = $sanitize ? filter_xss($name) : $name;
           break;
 
         case 'mail':
-          if ($comment->uid->value != 0) {
-            $account = user_load($comment->uid->value);
+          if ($comment->uid->target_id != 0) {
+            $account = user_load($comment->uid->target_id);
             $mail = $account->mail;
           }
           else {
@@ -175,8 +175,8 @@ function comment_tokens($type, $tokens, array $data = array(), array $options =
           break;
 
         case 'parent':
-          if (!empty($comment->pid->value)) {
-            $parent = comment_load($comment->pid->value);
+          if (!empty($comment->pid->target_id)) {
+            $parent = comment_load($comment->pid->target_id);
             $replacements[$original] = $sanitize ? filter_xss($parent->subject) : $parent->subject;
           }
           break;
diff --git a/core/modules/comment/lib/Drupal/comment/CommentFormController.php b/core/modules/comment/lib/Drupal/comment/CommentFormController.php
index fca09ba..c13711f 100644
--- a/core/modules/comment/lib/Drupal/comment/CommentFormController.php
+++ b/core/modules/comment/lib/Drupal/comment/CommentFormController.php
@@ -37,8 +37,8 @@ public function form(array $form, array &$form_state, EntityInterface $comment)
 
     // If not replying to a comment, use our dedicated page callback for new
     // comments on nodes.
-    if (!$comment->id() && !$comment->pid->value) {
-      $form['#action'] = url('comment/reply/' . $comment->nid->value);
+    if (!$comment->id() && !$comment->pid->target_id) {
+      $form['#action'] = url('comment/reply/' . $comment->nid->target_id);
     }
 
     if (isset($form_state['comment_preview'])) {
@@ -163,7 +163,7 @@ public function form(array $form, array &$form_state, EntityInterface $comment)
     // Used for conditional validation of author fields.
     $form['is_anonymous'] = array(
       '#type' => 'value',
-      '#value' => ($comment->id() ? !$comment->uid->value : !$user->uid),
+      '#value' => ($comment->id() ? !$comment->uid->target_id : !$user->uid),
     );
 
     // Make the comment inherit the current content language unless specifically
@@ -175,7 +175,8 @@ public function form(array $form, array &$form_state, EntityInterface $comment)
 
     // Add internal comment properties.
     foreach (array('cid', 'pid', 'nid', 'uid', 'node_type', 'langcode') as $key) {
-      $form[$key] = array('#type' => 'value', '#value' => $comment->$key->value);
+      $key_name = key($comment->$key->offsetGet(0)->getProperties());
+      $form[$key] = array('#type' => 'value', '#value' => $comment->$key->{$key_name});
     }
 
     return parent::form($form, $form_state, $comment);
@@ -275,7 +276,7 @@ public function submit(array $form, array &$form_state) {
     // @todo Too fragile. Should be prepared and stored in comment_form()
     // already.
     if (!$comment->is_anonymous && !empty($comment->name->value) && ($account = user_load_by_name($comment->name->value))) {
-      $comment->uid->value = $account->uid;
+      $comment->uid->target_id = $account->uid;
     }
     // If the comment was posted by an anonymous user and no author name was
     // required, use "Anonymous" by default.
diff --git a/core/modules/comment/lib/Drupal/comment/CommentRenderController.php b/core/modules/comment/lib/Drupal/comment/CommentRenderController.php
index a5ace07..dab8dc4 100644
--- a/core/modules/comment/lib/Drupal/comment/CommentRenderController.php
+++ b/core/modules/comment/lib/Drupal/comment/CommentRenderController.php
@@ -31,7 +31,7 @@ public function buildContent(array $entities, array $displays, $view_mode, $lang
     // Pre-load associated users into cache to leverage multiple loading.
     $uids = array();
     foreach ($entities as $entity) {
-      $uids[] = $entity->uid->value;
+      $uids[] = $entity->uid->target_id;
     }
     user_load_multiple(array_unique($uids));
 
@@ -40,13 +40,13 @@ public function buildContent(array $entities, array $displays, $view_mode, $lang
     // Load all nodes of all comments at once.
     $nids = array();
     foreach ($entities as $entity) {
-      $nids[$entity->nid->value] = $entity->nid->value;
+      $nids[$entity->nid->target_id] = $entity->nid->target_id;
     }
     $nodes = node_load_multiple($nids);
 
     foreach ($entities as $entity) {
-      if (isset($nodes[$entity->nid->value])) {
-        $node = $nodes[$entity->nid->value];
+      if (isset($nodes[$entity->nid->target_id])) {
+        $node = $nodes[$entity->nid->target_id];
       }
       else {
         throw new \InvalidArgumentException(t('Invalid node for comment.'));
diff --git a/core/modules/comment/lib/Drupal/comment/CommentStorageController.php b/core/modules/comment/lib/Drupal/comment/CommentStorageController.php
index 4c91741..78a4ca4 100644
--- a/core/modules/comment/lib/Drupal/comment/CommentStorageController.php
+++ b/core/modules/comment/lib/Drupal/comment/CommentStorageController.php
@@ -104,10 +104,10 @@ protected function preSave(EntityInterface $comment) {
           // is extended in a faulty manner.
           throw new LogicException('preSave is called again without calling postSave() or releaseThreadLock()');
         }
-        if ($comment->pid->value == 0) {
+        if ($comment->pid->target_id == 0) {
           // This is a comment with no parent comment (depth 0): we start
           // by retrieving the maximum thread level.
-          $max = db_query('SELECT MAX(thread) FROM {comment} WHERE nid = :nid', array(':nid' => $comment->nid->value))->fetchField();
+          $max = db_query('SELECT MAX(thread) FROM {comment} WHERE nid = :nid', array(':nid' => $comment->nid->target_id))->fetchField();
           // Strip the "/" from the end of the thread.
           $max = rtrim($max, '/');
           // We need to get the value at the correct depth.
@@ -127,7 +127,7 @@ protected function preSave(EntityInterface $comment) {
           // Get the max value in *this* thread.
           $max = db_query("SELECT MAX(thread) FROM {comment} WHERE thread LIKE :thread AND nid = :nid", array(
             ':thread' => $parent->thread->value . '.%',
-            ':nid' => $comment->nid->value,
+            ':nid' => $comment->nid->target_id,
           ))->fetchField();
 
           if ($max == '') {
@@ -150,7 +150,7 @@ protected function preSave(EntityInterface $comment) {
         // has the lock, just move to the next integer.
         do {
           $thread = $prefix . comment_int_to_alphadecimal(++$n) . '/';
-        } while (!lock()->acquire("comment:{$comment->nid->value}:$thread"));
+        } while (!lock()->acquire("comment:{$comment->nid->target_id}:$thread"));
         $this->threadLock = $thread;
       }
       if (empty($comment->created->value)) {
@@ -161,7 +161,7 @@ protected function preSave(EntityInterface $comment) {
       }
       // We test the value with '===' because we need to modify anonymous
       // users as well.
-      if ($comment->uid->value === $user->uid && isset($user->name)) {
+      if ($comment->uid->target_id === $user->uid && isset($user->name)) {
         $comment->name->value = $user->name;
       }
       // Add the values which aren't passed into the function.
@@ -176,7 +176,7 @@ protected function preSave(EntityInterface $comment) {
   protected function postSave(EntityInterface $comment, $update) {
     $this->releaseThreadLock();
     // Update the {node_comment_statistics} table prior to executing the hook.
-    $this->updateNodeStatistics($comment->nid->value);
+    $this->updateNodeStatistics($comment->nid->target_id);
     if ($comment->status->value == COMMENT_PUBLISHED) {
       module_invoke_all('comment_publish', $comment);
     }
@@ -194,7 +194,7 @@ protected function postDelete($comments) {
     comment_delete_multiple($child_cids);
 
     foreach ($comments as $comment) {
-      $this->updateNodeStatistics($comment->nid->value);
+      $this->updateNodeStatistics($comment->nid->target_id);
     }
   }
 
@@ -287,14 +287,14 @@ public function baseFieldDefinitions() {
     $properties['pid'] = array(
       'label' => t('Parent ID'),
       'description' => t('The parent comment ID if this is a reply to a comment.'),
-      'type' => 'entityreference_field',
-      'settings' => array('entity type' => 'comment'),
+      'type' => 'entity_reference_field',
+      'settings' => array('target_type' => 'comment'),
     );
     $properties['nid'] = array(
       'label' => t('Node ID'),
       'description' => t('The ID of the node of which this comment is a reply.'),
-      'type' => 'entityreference_field',
-      'settings' => array('entity type' => 'node'),
+      'type' => 'entity_reference_field',
+      'settings' => array('target_type' => 'node'),
       'required' => TRUE,
     );
     $properties['langcode'] = array(
@@ -310,8 +310,8 @@ public function baseFieldDefinitions() {
     $properties['uid'] = array(
       'label' => t('User ID'),
       'description' => t('The user ID of the comment author.'),
-      'type' => 'entityreference_field',
-      'settings' => array('entity type' => 'user'),
+      'type' => 'entity_reference_field',
+      'settings' => array('target_type' => 'user'),
     );
     $properties['name'] = array(
       'label' => t('Name'),
diff --git a/core/modules/comment/lib/Drupal/comment/FieldNewValue.php b/core/modules/comment/lib/Drupal/comment/FieldNewValue.php
index c3e0d94..52875ca 100644
--- a/core/modules/comment/lib/Drupal/comment/FieldNewValue.php
+++ b/core/modules/comment/lib/Drupal/comment/FieldNewValue.php
@@ -28,7 +28,7 @@ public function getValue($langcode = NULL) {
       }
       $field = $this->parent->getParent();
       $entity = $field->getParent();
-      $this->value = node_mark($entity->nid->value, $entity->changed->value);
+      $this->value = node_mark($entity->nid->target_id, $entity->changed->value);
     }
     return $this->value;
   }
diff --git a/core/modules/comment/lib/Drupal/comment/Plugin/Core/Entity/Comment.php b/core/modules/comment/lib/Drupal/comment/Plugin/Core/Entity/Comment.php
index c6175af..23f22d0 100644
--- a/core/modules/comment/lib/Drupal/comment/Plugin/Core/Entity/Comment.php
+++ b/core/modules/comment/lib/Drupal/comment/Plugin/Core/Entity/Comment.php
@@ -186,7 +186,7 @@ class Comment extends EntityNG implements ContentEntityInterface {
   protected $values = array(
     'langcode' => array(LANGUAGE_DEFAULT => array(0 => array('value' => LANGUAGE_NOT_SPECIFIED))),
     'name' => array(LANGUAGE_DEFAULT => array(0 => array('value' => ''))),
-    'uid' => array(LANGUAGE_DEFAULT => array(0 => array('value' => 0))),
+    'uid' => array(LANGUAGE_DEFAULT => array(0 => array('target_id' => 0))),
   );
 
   /**
diff --git a/core/modules/comment/lib/Drupal/comment/Plugin/entity_reference/selection/CommentSelection.php b/core/modules/comment/lib/Drupal/comment/Plugin/entity_reference/selection/CommentSelection.php
new file mode 100644
index 0000000..42f6a32
--- /dev/null
+++ b/core/modules/comment/lib/Drupal/comment/Plugin/entity_reference/selection/CommentSelection.php
@@ -0,0 +1,81 @@
+<?php
+
+/**
+ * @file
+ * Contains Drupal\comment\Plugin\entity_reference\selection\CommentSelection.
+ */
+
+namespace Drupal\comment\Plugin\entity_reference\selection;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\Core\Database\Query\SelectInterface;
+use Drupal\entity_reference\Plugin\entity_reference\selection\SelectionBase;
+
+/**
+ * Provides specific access control for the comment entity type.
+ *
+ * @Plugin(
+ *   id = "comment_default",
+ *   module = "comment",
+ *   label = @Translation("Comment selection"),
+ *   entity_types = {"comment"},
+ *   group = "default",
+ *   weight = 1
+ * )
+ */
+class CommentSelection extends SelectionBase {
+
+  /**
+   * Overrides SelectionBase::buildEntityQuery().
+   */
+  public function buildEntityQuery($match = NULL, $match_operator = 'CONTAINS') {
+    $query = parent::buildEntityQuery($match, $match_operator);
+
+    // Adding the 'comment_access' tag is sadly insufficient for comments:
+    // core requires us to also know about the concept of 'published' and
+    // 'unpublished'.
+    if (!user_access('administer comments')) {
+      $query->condition('status', COMMENT_PUBLISHED);
+    }
+    return $query;
+  }
+
+  /**
+   * Overrides SelectionBase::entityQueryAlter().
+   */
+  public function entityQueryAlter(SelectInterface $query) {
+    $tables = $query->getTables();
+    $base_table = $tables['base_table']['alias'];
+
+    // The Comment module doesn't implement any proper comment access,
+    // and as a consequence doesn't make sure that comments cannot be viewed
+    // when the user doesn't have access to the node.
+    $node_alias = $query->innerJoin('node', 'n', '%alias.nid = ' . $base_table . '.nid');
+    // Pass the query to the node access control.
+    $this->reAlterQuery($query, 'node_access', $node_alias);
+
+    // Alas, the comment entity exposes a bundle, but doesn't have a bundle
+    // column in the database. We have to alter the query ourselves to go fetch
+    // the bundle.
+    $conditions = &$query->conditions();
+    foreach ($conditions as $key => &$condition) {
+      if ($key !== '#conjunction' && is_string($condition['field']) && $condition['field'] === 'node_type') {
+        $condition['field'] = $node_alias . '.type';
+        foreach ($condition['value'] as &$value) {
+          if (substr($value, 0, 13) == 'comment_node_') {
+            $value = substr($value, 13);
+          }
+        }
+        break;
+      }
+    }
+
+    // Passing the query to node_query_node_access_alter() is sadly
+    // insufficient for nodes.
+    // @see SelectionEntityTypeNode::entityQueryAlter()
+    if (!user_access('bypass node access') && !count(module_implements('node_grants'))) {
+      $query->condition($node_alias . '.status', 1);
+    }
+  }
+}
diff --git a/core/modules/comment/lib/Drupal/comment/Tests/CommentInterfaceTest.php b/core/modules/comment/lib/Drupal/comment/Tests/CommentInterfaceTest.php
index 36f9f43..24a7931 100644
--- a/core/modules/comment/lib/Drupal/comment/Tests/CommentInterfaceTest.php
+++ b/core/modules/comment/lib/Drupal/comment/Tests/CommentInterfaceTest.php
@@ -67,7 +67,7 @@ function testCommentInterface() {
     // Test changing the comment author to "Anonymous".
     $this->drupalGet('comment/' . $comment->id() . '/edit');
     $comment = $this->postComment(NULL, $comment->comment_body->value, $comment->subject->value, array('name' => ''));
-    $this->assertTrue(empty($comment->name->value) && $comment->uid->value == 0, 'Comment author successfully changed to anonymous.');
+    $this->assertTrue(empty($comment->name->value) && $comment->uid->target_id == 0, 'Comment author successfully changed to anonymous.');
 
     // Test changing the comment author to an unverified user.
     $random_name = $this->randomName();
@@ -79,7 +79,7 @@ function testCommentInterface() {
     // Test changing the comment author to a verified user.
     $this->drupalGet('comment/' . $comment->id() . '/edit');
     $comment = $this->postComment(NULL, $comment->comment_body->value, $comment->subject->value, array('name' => $this->web_user->name));
-    $this->assertTrue($comment->name->value == $this->web_user->name && $comment->uid->value == $this->web_user->uid, 'Comment author successfully changed to a registered user.');
+    $this->assertTrue($comment->name->value == $this->web_user->name && $comment->uid->target_id == $this->web_user->uid, 'Comment author successfully changed to a registered user.');
 
     $this->drupalLogout();
 
@@ -92,7 +92,7 @@ function testCommentInterface() {
     $reply = $this->postComment(NULL, $this->randomName(), '', TRUE);
     $reply_loaded = comment_load($reply->id());
     $this->assertTrue($this->commentExists($reply, TRUE), 'Reply found.');
-    $this->assertEqual($comment->id(), $reply_loaded->pid->value, 'Pid of a reply to a comment is set correctly.');
+    $this->assertEqual($comment->id(), $reply_loaded->pid->target_id, 'Pid of a reply to a comment is set correctly.');
     $this->assertEqual(rtrim($comment->thread->value, '/') . '.00/', $reply_loaded->thread->value, 'Thread of reply grows correctly.');
 
     // Second reply to comment #3 creating comment #4.
diff --git a/core/modules/comment/lib/Drupal/comment/Tests/CommentTokenReplaceTest.php b/core/modules/comment/lib/Drupal/comment/Tests/CommentTokenReplaceTest.php
index 5421c0b..6bcc992 100644
--- a/core/modules/comment/lib/Drupal/comment/Tests/CommentTokenReplaceTest.php
+++ b/core/modules/comment/lib/Drupal/comment/Tests/CommentTokenReplaceTest.php
@@ -61,11 +61,11 @@ function testCommentTokenReplacement() {
     $tests['[comment:edit-url]'] = url('comment/' . $comment->id() . '/edit', $url_options);
     $tests['[comment:created:since]'] = format_interval(REQUEST_TIME - $comment->created->value, 2, $language_interface->langcode);
     $tests['[comment:changed:since]'] = format_interval(REQUEST_TIME - $comment->changed->value, 2, $language_interface->langcode);
-    $tests['[comment:parent:cid]'] = $comment->pid->value;
+    $tests['[comment:parent:cid]'] = $comment->pid->target_id;
     $tests['[comment:parent:title]'] = check_plain($parent_comment->subject->value);
-    $tests['[comment:node:nid]'] = $comment->nid->value;
+    $tests['[comment:node:nid]'] = $comment->nid->target_id;
     $tests['[comment:node:title]'] = check_plain($node->title);
-    $tests['[comment:author:uid]'] = $comment->uid->value;
+    $tests['[comment:author:uid]'] = $comment->uid->target_id;
     $tests['[comment:author:name]'] = check_plain($this->admin_user->name);
 
     // Test to make sure that we generated something for each token.
diff --git a/core/modules/comment/lib/Drupal/comment/Tests/Views/DefaultViewRecentComments.php b/core/modules/comment/lib/Drupal/comment/Tests/Views/DefaultViewRecentComments.php
index fa0145d..3006f94 100644
--- a/core/modules/comment/lib/Drupal/comment/Tests/Views/DefaultViewRecentComments.php
+++ b/core/modules/comment/lib/Drupal/comment/Tests/Views/DefaultViewRecentComments.php
@@ -78,8 +78,8 @@ public function setUp() {
     // Create some comments and attach them to the created node.
     for ($i = 0; $i < $this->masterDisplayResults; $i++) {
       $comment = entity_create('comment', array('node_type' => 'comment_node_' . $this->node->type));
-      $comment->uid->value = 0;
-      $comment->nid->value = $this->node->nid;
+      $comment->uid->target_id = 0;
+      $comment->nid->target_id = $this->node->nid;
       $comment->subject->value = 'Test comment ' . $i;
       $comment->comment_body->value = 'Test body ' . $i;
       $comment->comment_body->format = 'full_html';
@@ -107,7 +107,7 @@ public function testBlockDisplay() {
     );
     $expected_result = array();
     foreach (array_values($this->commentsCreated) as $key => $comment) {
-      $expected_result[$key]['nid'] = $comment->nid->value;
+      $expected_result[$key]['nid'] = $comment->nid->target_id;
       $expected_result[$key]['subject'] = $comment->subject->value;
       $expected_result[$key]['cid'] = $comment->id();
       $expected_result[$key]['changed'] = $comment->changed->value;
@@ -139,7 +139,7 @@ public function testPageDisplay() {
     );
     $expected_result = array();
     foreach (array_values($this->commentsCreated) as $key => $comment) {
-      $expected_result[$key]['nid'] = $comment->nid->value;
+      $expected_result[$key]['nid'] = $comment->nid->target_id;
       $expected_result[$key]['subject'] = $comment->subject->value;
       $expected_result[$key]['changed'] = $comment->changed->value;
       $expected_result[$key]['created'] = $comment->created->value;
diff --git a/core/modules/entity_reference/css/entity_reference-rtl.admin.css b/core/modules/entity_reference/css/entity_reference-rtl.admin.css
new file mode 100644
index 0000000..3302ab8
--- /dev/null
+++ b/core/modules/entity_reference/css/entity_reference-rtl.admin.css
@@ -0,0 +1,4 @@
+
+.entity_reference-settings {
+  margin-right: 1.5em;
+}
diff --git a/core/modules/entity_reference/css/entity_reference.admin.css b/core/modules/entity_reference/css/entity_reference.admin.css
new file mode 100644
index 0000000..d608ccf
--- /dev/null
+++ b/core/modules/entity_reference/css/entity_reference.admin.css
@@ -0,0 +1,4 @@
+
+.entity_reference-settings {
+  margin-left: 1.5em; /* LTR */
+}
diff --git a/core/modules/entity_reference/entity_reference.info b/core/modules/entity_reference/entity_reference.info
new file mode 100644
index 0000000..2216092
--- /dev/null
+++ b/core/modules/entity_reference/entity_reference.info
@@ -0,0 +1,6 @@
+name = Entity Reference
+description = Provides a field that can reference other entities.
+package = Core
+version = VERSION
+core = 8.x
+dependencies[] = field
diff --git a/core/modules/entity_reference/entity_reference.install b/core/modules/entity_reference/entity_reference.install
new file mode 100644
index 0000000..17030ef
--- /dev/null
+++ b/core/modules/entity_reference/entity_reference.install
@@ -0,0 +1,49 @@
+<?php
+
+/**
+ * @file
+ * Install, update and uninstall functions for the Entity reference
+ * module.
+ */
+
+/**
+ * Implements hook_field_schema().
+ */
+function entity_reference_field_schema($field) {
+  $schema = array(
+    'columns' => array(
+      'target_id' => array(
+        'description' => 'The ID of the target entity.',
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+      ),
+      'revision_id' => array(
+        'description' => 'The revision ID of the target entity.',
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => FALSE,
+      ),
+    ),
+    'indexes' => array(
+      'target_id' => array('target_id'),
+    ),
+    'foreign keys' => array(),
+  );
+
+  // Create a foreign key to the target entity type base type.
+  // @todo It's still not safe to call entity_get_info() in here.
+  // see http://drupal.org/node/1847582
+  //  $entity_type = $field['settings']['target_type'];
+  //  $entity_info = entity_get_info($entity_type);
+  //
+  //  $base_table = $entity_info['base_table'];
+  //  $id_column = $entity_info['entity_keys']['id'];
+  //
+  //  $schema['foreign keys'][$base_table] = array(
+  //    'table' => $base_table,
+  //    'columns' => array('target_id' => $id_column),
+  //  );
+
+  return $schema;
+}
diff --git a/core/modules/entity_reference/entity_reference.module b/core/modules/entity_reference/entity_reference.module
new file mode 100644
index 0000000..053e2ee
--- /dev/null
+++ b/core/modules/entity_reference/entity_reference.module
@@ -0,0 +1,524 @@
+<?php
+
+/**
+ * @file
+ * Provides a field that can reference other entities.
+ */
+
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Drupal\Component\Utility\NestedArray;
+use Drupal\Core\Database\Query\AlterableInterface;
+use Drupal\Core\Entity\EntityInterface;
+
+/**
+ * Implements hook_field_info().
+ */
+function entity_reference_field_info() {
+  $field_info['entity_reference'] = array(
+    'label' => t('Entity Reference'),
+    'description' => t('This field references another entity.'),
+    'settings' => array(
+      // Default to a primary entity type (i.e. node or user).
+      'target_type' => module_exists('node') ? 'node' : 'user',
+    ),
+    'instance_settings' => array(
+      // The selection handler for this instance.
+      'handler' => 'default',
+      // The handler settings.
+      'handler_settings' => array(),
+    ),
+    'default_widget' => 'entity_reference_autocomplete',
+    'default_formatter' => 'entity_reference_label',
+    'field item class' => 'Drupal\Core\Entity\Field\Type\EntityReferenceItem',
+  );
+  return $field_info;
+}
+
+/**
+ * Implements hook_entity_field_info().
+ *
+ * Set the "target_type" property definition for entity reference fields.
+ *
+ * @see Drupal\Core\Entity\Field\Type\EntityReferenceItem::getPropertyDefinitions()
+ */
+function entity_reference_entity_field_info($entity_type) {
+  $property_info = array();
+  foreach (field_info_instances($entity_type) as $bundle_name => $instances) {
+    foreach ($instances as $field_name => $instance) {
+      $field = field_info_field($field_name);
+      if ($field['type'] != 'entity_reference') {
+        continue;
+      }
+      $property_info['definitions'][$field_name]['settings']['target_type'] = $field['settings']['target_type'];
+    }
+  }
+  return $property_info;
+}
+
+/**
+ * Implements hook_menu().
+ */
+function entity_reference_menu() {
+  $items = array();
+
+  $items['entity_reference/autocomplete/single/%/%/%'] = array(
+    'title' => 'Entity Reference Autocomplete',
+    'page callback' => 'entity_reference_autocomplete_callback',
+    'page arguments' => array(2, 3, 4, 5),
+    'access callback' => 'entity_reference_autocomplete_access_callback',
+    'access arguments' => array(2, 3, 4, 5),
+    'type' => MENU_CALLBACK,
+  );
+  $items['entity_reference/autocomplete/tags/%/%/%'] = array(
+    'title' => 'Entity Reference Autocomplete',
+    'page callback' => 'entity_reference_autocomplete_callback',
+    'page arguments' => array(2, 3, 4, 5),
+    'access callback' => 'entity_reference_autocomplete_access_callback',
+    'access arguments' => array(2, 3, 4, 5),
+    'type' => MENU_CALLBACK,
+  );
+
+  return $items;
+}
+
+/**
+ * Gets the selection handler for a given entity_reference field.
+ *
+ * @return \Drupal\entity_reference\Plugin\Type\Selection\SelectionInterface
+ */
+function entity_reference_get_selection_handler($field, $instance, EntityInterface $entity = NULL) {
+  $options = array(
+    'field' => $field,
+    'instance' => $instance,
+    'entity' => $entity,
+  );
+  return drupal_container()->get('plugin.manager.entity_reference.selection')->getInstance($options);
+}
+
+/**
+ * Implements hook_field_is_empty().
+ */
+function entity_reference_field_is_empty($item, $field) {
+  if (!empty($item['target_id']) && $item['target_id'] == 'auto_create') {
+    // Allow auto-create entities.
+    return FALSE;
+  }
+  return !isset($item['target_id']) || !is_numeric($item['target_id']);
+}
+
+/**
+ * Implements hook_field_presave().
+ *
+ * Create an entity on the fly.
+ */
+function entity_reference_field_presave(EntityInterface $entity, $field, $instance, $langcode, &$items) {
+  global $user;
+  $target_type = $field['settings']['target_type'];
+  $entity_info = entity_get_info($target_type);
+
+  // Get the bundle.
+  if (!empty($instance['settings']['handler_settings']['target_bundles']) && count($instance['settings']['handler_settings']['target_bundles']) == 1) {
+    $bundle = reset($instance['settings']['handler_settings']['target_bundles']);
+  }
+  else {
+    $bundle = reset($entity_info['bundles']);
+  }
+
+  foreach ($items as $delta => $item) {
+    if ($item['target_id'] == 'auto_create') {
+      $bundle_key = $entity_info['entity_keys']['bundle'];
+      $label_key = $entity_info['entity_keys']['label'];
+      $values = array(
+        $label_key => $item['label'],
+        $bundle_key => $bundle,
+        // @todo: Use wrapper to get the user if exists or needed.
+        'uid' => isset($entity->uid) ? $entity->uid : $user->uid,
+      );
+      $target_entity = entity_create($target_type, $values);
+      $target_entity->save();
+      $items[$delta]['target_id'] = $target_entity->id();
+    }
+  }
+}
+
+
+/**
+ * Implements hook_field_validate().
+ */
+function entity_reference_field_validate(EntityInterface $entity = NULL, $field, $instance, $langcode, $items, &$errors) {
+  $ids = array();
+  foreach ($items as $delta => $item) {
+    if ($item['target_id'] !== 'auto_create' && !entity_reference_field_is_empty($item, $field)) {
+      $ids[$item['target_id']] = $delta;
+    }
+  }
+
+  if ($ids) {
+    $valid_ids = entity_reference_get_selection_handler($field, $instance, $entity)->validateReferencableEntities(array_keys($ids));
+
+    $invalid_entities = array_diff_key($ids, array_flip($valid_ids));
+    if ($invalid_entities) {
+      foreach ($invalid_entities as $id => $delta) {
+        $errors[$field['field_name']][$langcode][$delta][] = array(
+          'error' => 'entity_reference_invalid_entity',
+          'message' => t('The referenced entity (@type: @id) does not exist.', array('@type' => $field['settings']['target_type'], '@id' => $id)),
+        );
+      }
+    }
+  }
+}
+
+/**
+ * Implements hook_field_settings_form().
+ */
+function entity_reference_field_settings_form($field, $instance, $has_data) {
+  // Select the target entity type.
+  $entity_type_options = array();
+  foreach (entity_get_info() as $entity_type => $entity_info) {
+    // @todo Remove this ugly hack, needed for now because Config entities have
+    // no EFQ support. Revisit after http://drupal.org/node/1853856 and
+    // http://drupal.org/node/1846454.
+    if (!is_subclass_of($entity_info['class'], '\Drupal\Core\Config\Entity\ConfigEntityBase')) {
+      $entity_type_options[$entity_type] = $entity_info['label'];
+    }
+  }
+
+  $form['target_type'] = array(
+    '#type' => 'select',
+    '#title' => t('Target type'),
+    '#options' => $entity_type_options,
+    '#default_value' => $field['settings']['target_type'],
+    '#required' => TRUE,
+    '#description' => t('The entity type that can be referenced through this field.'),
+    '#disabled' => $has_data,
+    '#size' => 1,
+  );
+
+  return $form;
+}
+
+/**
+ * Implements hook_field_instance_settings_form().
+ */
+function entity_reference_field_instance_settings_form($field, $instance, $form_state) {
+  $field = isset($form_state['entity_reference']['field']) ? $form_state['entity_reference']['field'] : $field;
+  $instance = isset($form_state['entity_reference']['instance']) ? $form_state['entity_reference']['instance'] : $instance;
+
+  $settings = $instance['settings'];
+  $settings += array('handler' => 'default');
+
+  // Get all selection plugins for this entity type.
+  $selection_plugins = drupal_container()->get('plugin.manager.entity_reference.selection')->getSelectionGroups($field['settings']['target_type']);
+  $handler_groups = array_keys($selection_plugins);
+
+  $handlers = drupal_container()->get('plugin.manager.entity_reference.selection')->getDefinitions();
+  $handlers_options = array();
+  foreach ($handlers as $plugin_id => $plugin) {
+    // We only display base plugins (e.g. 'base', 'views', ..) and not entity
+    // type specific plugins (e.g. 'base_node', 'base_user', ...).
+    if (in_array($plugin_id, $handler_groups)) {
+      $handlers_options[$plugin_id] = check_plain($plugin['label']);
+    }
+  }
+
+  $form = array(
+    '#type' => 'container',
+    '#attached' => array(
+      'css' => array(drupal_get_path('module', 'entity_reference') . '/css/entity_reference.admin.css'),
+    ),
+    '#process' => array(
+      '_entity_reference_field_instance_settings_ajax_process',
+    ),
+    '#element_validate' => array('_entity_reference_field_instance_settings_validate'),
+    '#field' => $field,
+    '#instance' => $instance,
+  );
+  $form['handler'] = array(
+    '#type' => 'details',
+    '#title' => t('Reference type'),
+    '#tree' => TRUE,
+    '#process' => array('_entity_reference_form_process_merge_parent'),
+  );
+
+  $form['handler']['handler'] = array(
+    '#type' => 'select',
+    '#title' => t('Reference method'),
+    '#options' => $handlers_options,
+    '#default_value' => $settings['handler'],
+    '#required' => TRUE,
+    '#ajax' => TRUE,
+    '#limit_validation_errors' => array(),
+  );
+  $form['handler']['handler_submit'] = array(
+    '#type' => 'submit',
+    '#value' => t('Change handler'),
+    '#limit_validation_errors' => array(),
+    '#attributes' => array(
+      'class' => array('js-hide'),
+    ),
+    '#submit' => array('entity_reference_settings_ajax_submit'),
+  );
+
+  $form['handler']['handler_settings'] = array(
+    '#type' => 'container',
+    '#attributes' => array('class' => array('entity_reference-settings')),
+  );
+
+  $handler = entity_reference_get_selection_handler($field, $instance);
+  $form['handler']['handler_settings'] += $handler->settingsForm($field, $instance);
+
+  return $form;
+}
+
+/**
+ * Render API callback: Processes the field instance settings form and allows
+ * access to the form state.
+ *
+ * @see entity_reference_field_instance_settings_form()
+ */
+function _entity_reference_field_instance_settings_ajax_process($form, $form_state) {
+  _entity_reference_field_instance_settings_ajax_process_element($form, $form);
+  return $form;
+}
+
+/**
+ * Adds entity_reference specific properties to AJAX form elements from the
+ * field instance settings form.
+ *
+ * @see _entity_reference_field_instance_settings_ajax_process()
+ */
+function _entity_reference_field_instance_settings_ajax_process_element(&$element, $main_form) {
+  if (!empty($element['#ajax'])) {
+    $element['#ajax'] = array(
+      'callback' => 'entity_reference_settings_ajax',
+      'wrapper' => $main_form['#id'],
+      'element' => $main_form['#array_parents'],
+    );
+  }
+
+  foreach (element_children($element) as $key) {
+    _entity_reference_field_instance_settings_ajax_process_element($element[$key], $main_form);
+  }
+}
+
+/**
+ * Render API callback: Moves entity_reference specific Form API elements
+ * (i.e. 'handler_settings') up a level for easier processing by the validation
+ * and submission handlers.
+ *
+ * @see _entity_reference_field_settings_process()
+ */
+function _entity_reference_form_process_merge_parent($element) {
+  $parents = $element['#parents'];
+  array_pop($parents);
+  $element['#parents'] = $parents;
+  return $element;
+}
+
+/**
+ * Form element validation handler; Filters the #value property of an element.
+ */
+function _entity_reference_element_validate_filter(&$element, &$form_state) {
+  $element['#value'] = array_filter($element['#value']);
+  form_set_value($element, $element['#value'], $form_state);
+}
+
+/**
+ * Form element validation handler; Stores the new values in the form state.
+ *
+ * @see entity_reference_field_instance_settings_form()
+ */
+function _entity_reference_field_instance_settings_validate($form, &$form_state) {
+  $instance = $form['#instance'];
+  if (isset($form_state['values']['instance'])) {
+    $instance['settings'] = $form_state['values']['instance']['settings'];
+  }
+  $form_state['entity_reference']['instance'] = $instance;
+
+  unset($form_state['values']['instance']['settings']['handler_submit']);
+}
+
+/**
+ * Ajax callback for the handler settings form.
+ *
+ * @see entity_reference_field_instance_settings_form()
+ */
+function entity_reference_settings_ajax($form, $form_state) {
+  $trigger = $form_state['triggering_element'];
+  return NestedArray::getValue($form, $trigger['#ajax']['element']);
+}
+
+/**
+ * Submit handler for the non-JS case.
+ *
+ * @see entity_reference_field_instance_settings_form()
+ */
+function entity_reference_settings_ajax_submit($form, &$form_state) {
+  $form_state['rebuild'] = TRUE;
+}
+
+/**
+ * Implements hook_options_list().
+ */
+function entity_reference_options_list($field, $instance, $entity_type = NULL, $entity = NULL) {
+  if (!$options = entity_reference_get_selection_handler($field, $instance, $entity)->getReferencableEntities()) {
+    return array();
+  }
+
+  // Rebuild the array by changing the bundle key into the bundle label.
+  $target_type = $field['settings']['target_type'];
+  $entity_info = entity_get_info($target_type);
+
+  $return = array();
+  foreach ($options as $bundle => $entity_ids) {
+    $bundle_label = check_plain($entity_info['bundles'][$bundle]['label']);
+    $return[$bundle_label] = $entity_ids;
+  }
+
+  return count($return) == 1 ? reset($return) : $return;
+}
+
+/**
+ * Implements hook_query_TAG_alter().
+ */
+function entity_reference_query_entity_reference_alter(AlterableInterface $query) {
+  $handler = $query->getMetadata('entity_reference_selection_handler');
+  $handler->entityQueryAlter($query);
+}
+
+/**
+ * Menu Access callback for the autocomplete widget.
+ *
+ * @param string $type
+ *   The widget type (i.e. 'single' or 'tags').
+ * @param string $field_name
+ *   The name of the entity-reference field.
+ * @param string $entity_type
+ *   The entity type.
+ * @param string $bundle_name
+ *   The bundle name.
+ *
+ * @return bool
+ *   TRUE if user can access this menu item, FALSE otherwise.
+ */
+function entity_reference_autocomplete_access_callback($type, $field_name, $entity_type, $bundle_name) {
+  if (!$field = field_info_field($field_name)) {
+    return FALSE;
+  }
+  if (!$instance = field_info_instance($entity_type, $field_name, $bundle_name)){
+    return FALSE;
+  }
+
+  if ($field['type'] != 'entity_reference' || !field_access('edit', $field, $entity_type)) {
+    return FALSE;
+  }
+
+  return TRUE;
+}
+
+/**
+ * Menu callback; Autocomplete the label of an entity.
+ *
+ * @param string $type
+ *   The widget type (i.e. 'single' or 'tags').
+ * @param string $field_name
+ *   The name of the entity-reference field.
+ * @param string $entity_type
+ *   The entity type.
+ * @param string $bundle_name
+ *   The bundle name.
+ * @param string $entity_id
+ *   (optional) The entity ID the entity-reference field is attached to.
+ *   Defaults to ''.
+ *
+ * @return \Symfony\Component\HttpFoundation\JsonResponse
+ */
+function entity_reference_autocomplete_callback($type, $field_name, $entity_type, $bundle_name, $entity_id = '') {
+  $field = field_info_field($field_name);
+  $instance = field_info_instance($entity_type, $field_name, $bundle_name);
+
+  // Get the typed string, if exists from the URL.
+  $tags_typed = drupal_container()->get('request')->query->get('q');
+  $tags_typed = drupal_explode_tags($tags_typed);
+  $string = drupal_strtolower(array_pop($tags_typed));
+
+  return entity_reference_autocomplete_callback_get_matches($type, $field, $instance, $entity_type, $entity_id, $string);
+}
+
+/**
+ * Returns JSON data based on a given field, instance and search string.
+ *
+ * This function can be used by other modules that wish to pass a mocked
+ * definition of the field on instance.
+ *
+ * @param string $type
+ *   The widget type (i.e. 'single' or 'tags').
+ * @param array $field
+ *   The field array definition.
+ * @param array $instance
+ *   The instance array definition.
+ * @param string $entity_type
+ *   The entity type.
+ * @param string $entity_id
+ *   (optional) The entity ID the entity-reference field is attached to.
+ *   Defaults to ''.
+ * @param string $string
+ *   The label of the entity to query by.
+ *
+ * @return \Symfony\Component\HttpFoundation\JsonResponse
+ *
+ * @see entity_reference_autocomplete_callback()
+ */
+function entity_reference_autocomplete_callback_get_matches($type, $field, $instance, $entity_type, $entity_id = '', $string = '') {
+  $target_type = $field['settings']['target_type'];
+  $matches = array();
+  $entity = NULL;
+
+  if ($entity_id !== 'NULL') {
+    $entity = entity_load($entity_type, $entity_id);
+    // @todo: Improve when we have entity_access().
+    $entity_access = $target_type == 'node' ? node_access('view', $entity) : TRUE;
+    if (!$entity || !$entity_access) {
+      return MENU_ACCESS_DENIED;
+    }
+  }
+  $handler = entity_reference_get_selection_handler($field, $instance, $entity);
+
+  if ($type == 'tags') {
+    // The user enters a comma-separated list of tags. We only autocomplete the
+    // last tag.
+    $tags_typed = drupal_explode_tags($string);
+    $tag_last = drupal_strtolower(array_pop($tags_typed));
+    if (!empty($tag_last)) {
+      $prefix = count($tags_typed) ? implode(', ', $tags_typed) . ', ' : '';
+    }
+  }
+  else {
+    // The user enters a single tag.
+    $prefix = '';
+    $tag_last = $string;
+  }
+
+  if (isset($tag_last)) {
+    // Get an array of matching entities.
+    $match_operator = !empty($instance['widget']['settings']['match_operator']) ? $instance['widget']['settings']['match_operator'] : 'CONTAINS';
+    $entity_labels = $handler->getReferencableEntities($tag_last, $match_operator, 10);
+
+    // Loop through the products and convert them into autocomplete output.
+    foreach ($entity_labels as $values) {
+      foreach ($values as $entity_id => $label) {
+        $key = "$label ($entity_id)";
+        // Strip things like starting/trailing white spaces, line breaks and
+        // tags.
+        $key = preg_replace('/\s\s+/', ' ', str_replace("\n", '', trim(decode_entities(strip_tags($key)))));
+        // Names containing commas or quotes must be wrapped in quotes.
+        if (strpos($key, ',') !== FALSE || strpos($key, '"') !== FALSE) {
+          $key = '"' . str_replace('"', '""', $key) . '"';
+        }
+        $matches[$prefix . $key] = '<div class="reference-autocomplete">' . $label . '</div>';
+      }
+    }
+  }
+
+  return new JsonResponse($matches);
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/EntityReferenceBundle.php b/core/modules/entity_reference/lib/Drupal/entity_reference/EntityReferenceBundle.php
new file mode 100644
index 0000000..434937d
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/EntityReferenceBundle.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\EntityReferenceBundle.
+ */
+
+namespace Drupal\entity_reference;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\HttpKernel\Bundle\Bundle;
+
+/**
+ * Entity reference dependency injection container.
+ */
+class EntityReferenceBundle extends Bundle {
+
+  /**
+   * Overrides Symfony\Component\HttpKernel\Bundle\Bundle::build().
+   */
+  public function build(ContainerBuilder $container) {
+    // Register the SelectionPluginManager class with the dependency injection
+    // container.
+    $container->register('plugin.manager.entity_reference.selection', 'Drupal\entity_reference\Plugin\Type\SelectionPluginManager');
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Derivative/SelectionBase.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Derivative/SelectionBase.php
new file mode 100644
index 0000000..f8f784d
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Derivative/SelectionBase.php
@@ -0,0 +1,54 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\Derivative\SelectionBase.
+ */
+
+namespace Drupal\entity_reference\Plugin\Derivative;
+
+use Drupal\Component\Plugin\Derivative\DerivativeInterface;
+
+/**
+ * Base class for selection plugins provided by Entity reference.
+ */
+class SelectionBase implements DerivativeInterface {
+
+  /**
+   * Holds the list of plugin derivatives.
+   *
+   * @var array
+   */
+  protected $derivatives = array();
+
+  /**
+   * Implements DerivativeInterface::getDerivativeDefinition().
+   */
+  public function getDerivativeDefinition($derivative_id, array $base_plugin_definition) {
+    if (!empty($this->derivatives) && !empty($this->derivatives[$derivative_id])) {
+      return $this->derivatives[$derivative_id];
+    }
+    $this->getDerivativeDefinitions($base_plugin_definition);
+    return $this->derivatives[$derivative_id];
+  }
+
+  /**
+   * Implements DerivativeInterface::getDerivativeDefinitions().
+   */
+  public function getDerivativeDefinitions(array $base_plugin_definition) {
+    $supported_entities = array(
+      'comment',
+      'file',
+      'node',
+      'taxonomy_term',
+      'user'
+    );
+    foreach (entity_get_info() as $entity_type => $info) {
+      if (!in_array($entity_type, $supported_entities)) {
+        $this->derivatives[$entity_type] = $base_plugin_definition;
+        $this->derivatives[$entity_type]['label'] = t('@enitty_type selection', array('@entity_type' => $info['label']));
+      }
+    }
+    return $this->derivatives;
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Type/Selection/SelectionBroken.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Type/Selection/SelectionBroken.php
new file mode 100644
index 0000000..31c1cb1
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Type/Selection/SelectionBroken.php
@@ -0,0 +1,65 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\Type\Selection\SelectionBroken.
+ */
+
+namespace Drupal\entity_reference\Plugin\Type\Selection;
+
+use Drupal\Core\Database\Query\SelectInterface;
+
+/**
+ * A null implementation of SelectionInterface.
+ */
+class SelectionBroken implements SelectionInterface {
+
+  /**
+   * Constructs a SelectionBroken object.
+   */
+  public function __construct($field, $instance = NULL) {
+    $this->field = $field;
+    $this->instance = $instance;
+  }
+
+  /**
+   * Implements SelectionInterface::settingsForm().
+   */
+  public static function settingsForm(&$field, &$instance) {
+    $form['selection_handler'] = array(
+      '#markup' => t('The selected selection handler is broken.'),
+    );
+    return $form;
+  }
+
+  /**
+   * Implements SelectionInterface::getReferencableEntities().
+   */
+  public function getReferencableEntities($match = NULL, $match_operator = 'CONTAINS', $limit = 0) {
+    return array();
+  }
+
+  /**
+   * Implements SelectionInterface::countReferencableEntities().
+   */
+  public function countReferencableEntities($match = NULL, $match_operator = 'CONTAINS') {
+    return 0;
+  }
+
+  /**
+   * Implements SelectionInterface::validateReferencableEntities().
+   */
+  public function validateReferencableEntities(array $ids) {
+    return array();
+  }
+
+  /**
+   * Implements SelectionInterface::validateAutocompleteInput().
+   */
+  public function validateAutocompleteInput($input, &$element, &$form_state, $form, $strict = TRUE) { }
+
+  /**
+   * Implements SelectionInterface::entityQueryAlter().
+   */
+  public function entityQueryAlter(SelectInterface $query) { }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Type/Selection/SelectionInterface.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Type/Selection/SelectionInterface.php
new file mode 100644
index 0000000..7e41792
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Type/Selection/SelectionInterface.php
@@ -0,0 +1,85 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\Type\Selection\SelectionInterface.
+ */
+
+namespace Drupal\entity_reference\Plugin\Type\Selection;
+
+use Drupal\Core\Database\Query\SelectInterface;
+
+/**
+ * Interface definition for Entity reference selection plugins.
+ *
+ * This interface details the methods that most plugin implementations will want
+ * to override. See Drupal\field\Plugin\Type\Selection\SelectionBaseInterface
+ * for base wrapping methods that should most likely be inherited directly from
+ * Drupal\entity_reference\Plugin\Type\Selection\SelectionBase.
+ */
+interface SelectionInterface {
+
+  /**
+   * Returns a list of referencable entities.
+   *
+   * @return array
+   *   An array of referencable entities, which keys are entity ids and
+   *   values (safe HTML) labels to be displayed to the user.
+   */
+  public function getReferencableEntities($match = NULL, $match_operator = 'CONTAINS', $limit = 0);
+
+  /**
+   * Counts entities that are referencable by a given field.
+   *
+   * @return int
+   *   The number of referencable entities.
+   */
+  public function countReferencableEntities($match = NULL, $match_operator = 'CONTAINS');
+
+  /**
+   * Validates that entities can be referenced by this field.
+   *
+   * @return array
+   *   An array of valid entity IDs.
+   */
+  public function validateReferencableEntities(array $ids);
+
+  /**
+   * Validates input from an autocomplete widget that has no ID.
+   *
+   * @param string $input
+   *   Single string from autocomplete widget.
+   * @param array $element
+   *   The form element to set a form error.
+   * @param boolean $strict
+   *   Whether to trigger a form error if an element from $input (eg. an entity)
+   *   is not found. Defaults to TRUE.
+   *
+   * @return integer|null
+   *   Value of a matching entity ID, or NULL if none.
+   *
+   * @see \Drupal\entity_reference\Plugin\field\widget::elementValidate()
+   */
+  public function validateAutocompleteInput($input, &$element, &$form_state, $form, $strict = TRUE);
+
+  /**
+   * Allows the selection to alter the SelectQuery generated by EntityFieldQuery.
+   *
+   * @param \Drupal\Core\Database\Query\SelectInterface $query
+   *   A Select Query object.
+   */
+  public function entityQueryAlter(SelectInterface $query);
+
+  /**
+   * Generates the settings form for this selection.
+   *
+   * @param array $field
+   *   A field data structure.
+   * @param array $instance
+   *   A field instance data structure.
+   *
+   * @return array
+   *   A Form API array.
+   */
+  public static function settingsForm(&$field, &$instance);
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Type/SelectionPluginManager.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Type/SelectionPluginManager.php
new file mode 100644
index 0000000..7b9d1a2
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/Type/SelectionPluginManager.php
@@ -0,0 +1,84 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\Type\SelectionPluginManager.
+ */
+
+namespace Drupal\entity_reference\Plugin\Type;
+
+use Drupal\Component\Plugin\Exception\PluginException;
+use Drupal\Component\Plugin\Factory\ReflectionFactory;
+use Drupal\Component\Plugin\PluginManagerBase;
+use Drupal\Core\Plugin\Discovery\AlterDecorator;
+use Drupal\Core\Plugin\Discovery\AnnotatedClassDiscovery;
+use Drupal\Core\Plugin\Discovery\CacheDecorator;
+use Drupal\entity_reference\Plugin\Type\Selection\SelectionBroken;
+
+/**
+ * Plugin type manager for the Entity Reference Selection plugin.
+ */
+class SelectionPluginManager extends PluginManagerBase {
+
+  /**
+   * Constructs a SelectionPluginManager object.
+   */
+  public function __construct() {
+    $this->baseDiscovery = new AlterDecorator(new AnnotatedClassDiscovery('entity_reference', 'selection'), 'entity_reference_selection');
+    $this->discovery = new CacheDecorator($this->baseDiscovery, 'entity_reference_selection');
+    $this->factory = new ReflectionFactory($this);
+  }
+
+  /**
+   * Overrides Drupal\Component\Plugin\PluginManagerBase::createInstace().
+   */
+  public function createInstance($plugin_id, array $configuration = array()) {
+    // We want to provide a broken handler class whenever a class is not found.
+    try {
+      return parent::createInstance($plugin_id, $configuration);
+    }
+    catch (PluginException $e) {
+      return new SelectionBroken($configuration['field'], $configuration['instance']);
+    }
+  }
+
+  /**
+   * Overrides Drupal\Component\Plugin\PluginManagerBase::getInstance().
+   */
+  public function getInstance(array $options) {
+    $selection_handler = $options['instance']['settings']['handler'];
+    $target_entity_type = $options['field']['settings']['target_type'];
+
+    // Get all available selection plugins for this entity type.
+    $selection_handler_groups = $this->getSelectionGroups($target_entity_type);
+
+    // Sort the selection plugins by weight and select the best match.
+    uasort($selection_handler_groups[$selection_handler], 'drupal_sort_weight');
+    end($selection_handler_groups[$selection_handler]);
+    $plugin_id = key($selection_handler_groups[$selection_handler]);
+
+    return $this->createInstance($plugin_id, $options);
+  }
+
+  /**
+   * Returns a list of selection plugins that can reference a specific entity
+   * type.
+   *
+   * @param string $entity_type
+   *   A Drupal entity type.
+   *
+   * @return array
+   *   An array of selection plugins grouped by selection group.
+   */
+  public function getSelectionGroups($entity_type) {
+    $plugins = array();
+
+    foreach ($this->getDefinitions() as $plugin_id => $plugin) {
+      if (!isset($plugin['entity_types']) || in_array($entity_type, $plugin['entity_types'])) {
+        $plugins[$plugin['group']][$plugin_id] = $plugin;
+      }
+    }
+
+    return $plugins;
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/entity_reference/selection/SelectionBase.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/entity_reference/selection/SelectionBase.php
new file mode 100644
index 0000000..cbe157b
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/entity_reference/selection/SelectionBase.php
@@ -0,0 +1,328 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\entity_reference\selection\SelectionBase.
+ */
+
+namespace Drupal\entity_reference\Plugin\entity_reference\selection;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\Core\Database\Query\AlterableInterface;
+use Drupal\Core\Database\Query\SelectInterface;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Component\Utility\NestedArray;
+use Drupal\entity_reference\Plugin\Type\Selection\SelectionInterface;
+
+/**
+ * Plugin implementation of the 'selection' entity_reference.
+ *
+ * @Plugin(
+ *   id = "default",
+ *   module = "entity_reference",
+ *   label = @Translation("Default"),
+ *   group = "default",
+ *   weight = 0,
+ *   derivative = "Drupal\entity_reference\Plugin\Derivative\SelectionBase"
+ * )
+ */
+class SelectionBase implements SelectionInterface {
+
+  /**
+   * The field array.
+   *
+   * @var array
+   */
+  protected $field;
+
+  /**
+   * The instance array.
+   *
+   * @var array
+   */
+  protected $instance;
+
+  /**
+   * The entity object, or NULL
+   *
+   * @var NULL|EntityInterface
+   */
+  protected $entity;
+
+  /**
+   * Constructs a SelectionBase object.
+   */
+  public function __construct($field, $instance, EntityInterface $entity = NULL) {
+    $this->field = $field;
+    $this->instance = $instance;
+    $this->entity = $entity;
+  }
+
+  /**
+   * Implements SelectionInterface::settingsForm().
+   */
+  public static function settingsForm(&$field, &$instance) {
+    $entity_info = entity_get_info($field['settings']['target_type']);
+
+    // Merge-in default values.
+    if (!isset($instance['settings']['handler_settings'])) {
+      $instance['settings']['handler_settings'] = array();
+    }
+    $instance['settings']['handler_settings'] += array(
+      'target_bundles' => array(),
+      'sort' => array(
+        'field' => '_none',
+      ),
+      'auto_create' => FALSE,
+    );
+
+    if (!empty($entity_info['entity_keys']['bundle'])) {
+      $bundles = array();
+      foreach ($entity_info['bundles'] as $bundle_name => $bundle_info) {
+        $bundles[$bundle_name] = $bundle_info['label'];
+      }
+
+      $target_bundles_title = t('Bundles');
+      // Default core entity types with sensible labels.
+      if ($field['settings']['target_type'] == 'node') {
+        $target_bundles_title = t('Content types');
+      }
+      elseif ($field['settings']['target_type'] == 'taxonomy_term') {
+        $target_bundles_title = t('Vocabularies');
+      }
+
+      $form['target_bundles'] = array(
+        '#type' => 'checkboxes',
+        '#title' => $target_bundles_title,
+        '#options' => $bundles,
+        '#default_value' => (!empty($instance['settings']['handler_settings']['target_bundles'])) ? $instance['settings']['handler_settings']['target_bundles'] : array_keys($bundles),
+        '#size' => 6,
+        '#multiple' => TRUE,
+        '#element_validate' => array('_entity_reference_element_validate_filter'),
+      );
+    }
+    else {
+      $form['target_bundles'] = array(
+        '#type' => 'value',
+        '#value' => array(),
+      );
+    }
+
+    // @todo Use Entity::getPropertyDefinitions() when all entity types are
+    // converted to the new Field API.
+    $fields = drupal_map_assoc($entity_info['schema_fields_sql']['base_table']);
+    foreach (field_info_instances($field['settings']['target_type']) as $bundle_instances) {
+      foreach ($bundle_instances as $instance_name => $instance_info) {
+        $field_info = field_info_field($instance_name);
+        foreach ($field_info['columns'] as $column_name => $column_info) {
+          $fields[$instance_name . '.' . $column_name] = t('@label (@column)', array('@label' => $instance_info['label'], '@column' => $column_name));
+        }
+      }
+    }
+
+    $form['sort']['field'] = array(
+      '#type' => 'select',
+      '#title' => t('Sort by'),
+      '#options' => array(
+        '_none' => t('- None -'),
+      ) + $fields,
+      '#ajax' => TRUE,
+      '#limit_validation_errors' => array(),
+      '#default_value' => $instance['settings']['handler_settings']['sort']['field'],
+    );
+
+    $form['sort']['settings'] = array(
+      '#type' => 'container',
+      '#attributes' => array('class' => array('entity_reference-settings')),
+      '#process' => array('_entity_reference_form_process_merge_parent'),
+    );
+
+    if ($instance['settings']['handler_settings']['sort']['field'] != '_none') {
+      // Merge-in default values.
+      $instance['settings']['handler_settings']['sort'] += array(
+        'direction' => 'ASC',
+      );
+
+      $form['sort']['settings']['direction'] = array(
+        '#type' => 'select',
+        '#title' => t('Sort direction'),
+        '#required' => TRUE,
+        '#options' => array(
+          'ASC' => t('Ascending'),
+          'DESC' => t('Descending'),
+        ),
+        '#default_value' => $instance['settings']['handler_settings']['sort']['direction'],
+      );
+    }
+
+    $form['auto_create'] = array(
+      '#type' => 'checkbox',
+      '#title' => t("Create referenced entities if they don't already exist"),
+      '#default_value' => $instance['settings']['handler_settings']['auto_create'],
+    );
+
+    return $form;
+  }
+
+  /**
+   * Implements SelectionInterface::getReferencableEntities().
+   */
+  public function getReferencableEntities($match = NULL, $match_operator = 'CONTAINS', $limit = 0) {
+    $target_type = $this->field['settings']['target_type'];
+
+    $query = $this->buildEntityQuery($match, $match_operator);
+    if ($limit > 0) {
+      $query->range(0, $limit);
+    }
+
+    $result = $query->execute();
+
+    if (empty($result)) {
+      return array();
+    }
+
+    $options = array();
+    $entities = entity_load_multiple($target_type, $result);
+    foreach ($entities as $entity_id => $entity) {
+      $bundle = $entity->bundle();
+      $options[$bundle][$entity_id] = check_plain($entity->label());
+    }
+
+    return $options;
+  }
+
+  /**
+   * Implements SelectionInterface::countReferencableEntities().
+   */
+  public function countReferencableEntities($match = NULL, $match_operator = 'CONTAINS') {
+    $query = $this->buildEntityQuery($match, $match_operator);
+    return $query
+      ->count()
+      ->execute();
+  }
+
+  /**
+   * Implements SelectionInterface::validateReferencableEntities().
+   */
+  public function validateReferencableEntities(array $ids) {
+    $result = array();
+    if ($ids) {
+      $target_type = $this->field['settings']['target_type'];
+      $entity_info = entity_get_info($target_type);
+      $query = $this->buildEntityQuery();
+      $result = $query
+        ->condition($entity_info['entity_keys']['id'], $ids, 'IN')
+        ->execute();
+    }
+
+    return $result;
+  }
+
+  /**
+   * Implements SelectionInterface::validateAutocompleteInput().
+   */
+  public function validateAutocompleteInput($input, &$element, &$form_state, $form, $strict = TRUE) {
+    $entities = $this->getReferencableEntities($input, '=', 6);
+    $params = array(
+      '%value' => $input,
+      '@value' => $input,
+    );
+    if (empty($entities)) {
+      if ($strict) {
+        // Error if there are no entities available for a required field.
+        form_error($element, t('There are no entities matching "%value".', $params));
+      }
+    }
+    elseif (count($entities) > 5) {
+      $params['@id'] = key($entities);
+      // Error if there are more than 5 matching entities.
+      form_error($element, t('Many entities are called %value. Specify the one you want by appending the id in parentheses, like "@value (@id)".', $params));
+    }
+    elseif (count($entities) > 1) {
+      // More helpful error if there are only a few matching entities.
+      $multiples = array();
+      foreach ($entities as $id => $name) {
+        $multiples[] = $name . ' (' . $id . ')';
+      }
+      $params['@id'] = $id;
+      form_error($element, t('Multiple entities match this reference; "%multiple". Specify the one you want by appending the id in parentheses, like "@value (@id)".', array('%multiple' => implode('", "', $multiples))));
+    }
+    else {
+      // Take the one and only matching entity.
+      return key($entities);
+    }
+  }
+
+  /**
+   * Builds an EntityQuery to get referencable entities.
+   *
+   * @param string|null $match
+   *   (Optional) Text to match the label against. Defaults to NULL.
+   * @param string $match_operator
+   *   (Optional) The operation the matching should be done with. Defaults
+   *   to "CONTAINS".
+   *
+   * @return \Drupal\Core\Entity\Query\QueryInterface
+   *   The EntityQuery object with the basic conditions and sorting applied to
+   *   it.
+   */
+  public function buildEntityQuery($match = NULL, $match_operator = 'CONTAINS') {
+    $target_type = $this->field['settings']['target_type'];
+    $entity_info = entity_get_info($target_type);
+
+    $query = entity_query($target_type);
+    if (!empty($this->instance['settings']['handler_settings']['target_bundles'])) {
+      $query->condition($entity_info['entity_keys']['bundle'], $this->instance['settings']['handler_settings']['target_bundles'], 'IN');
+    }
+
+    if (isset($match) && isset($entity_info['entity_keys']['label'])) {
+      $query->condition($entity_info['entity_keys']['label'], $match, $match_operator);
+    }
+
+    // Add entity-access tag.
+    $query->addTag($this->field['settings']['target_type'] . '_access');
+
+    // Add the Selection handler for
+    // entity_reference_query_entity_reference_alter()
+    $query->addTag('entity_reference');
+    $query->addMetaData('field', $this->field);
+    $query->addMetaData('entity_reference_selection_handler', $this);
+
+    // Add the sort option.
+    if (!empty($this->instance['settings']['handler_settings']['sort'])) {
+      $sort_settings = $this->instance['settings']['handler_settings']['sort'];
+      if ($sort_settings['field'] != '_none') {
+        $query->sort($sort_settings['field'], $sort_settings['direction']);
+      }
+    }
+
+    return $query;
+  }
+
+  /**
+   * Implements SelectionInterface::entityQueryAlter().
+   */
+  public function entityQueryAlter(SelectInterface $query) { }
+
+  /**
+   * Helper method: Passes a query to the alteration system again.
+   *
+   * This allows Entity Reference to add a tag to an existing query so it can
+   * ask access control mechanisms to alter it again.
+   */
+  protected function reAlterQuery(AlterableInterface $query, $tag, $base_table) {
+    // Save the old tags and metadata.
+    // For some reason, those are public.
+    $old_tags = $query->alterTags;
+    $old_metadata = $query->alterMetaData;
+
+    $query->alterTags = array($tag => TRUE);
+    $query->alterMetaData['base_table'] = $base_table;
+    drupal_alter(array('query', 'query_' . $tag), $query);
+
+    // Restore the tags and metadata.
+    $query->alterTags = $old_tags;
+    $query->alterMetaData = $old_metadata;
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/formatter/EntityReferenceEntityFormatter.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/formatter/EntityReferenceEntityFormatter.php
new file mode 100644
index 0000000..ecf3e6f
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/formatter/EntityReferenceEntityFormatter.php
@@ -0,0 +1,119 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\field\formatter\EntityReferenceEntityFormatter.
+ */
+
+namespace Drupal\entity_reference\Plugin\field\formatter;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\entity_reference\RecursiveRenderingException;
+use Drupal\entity_reference\Plugin\field\formatter\EntityReferenceFormatterBase;
+
+/**
+ * Plugin implementation of the 'entity-reference rendered entity' formatter.
+ *
+ * @Plugin(
+ *   id = "entity_reference_entity_view",
+ *   module = "entity_reference",
+ *   label = @Translation("Rendered entity"),
+ *   description = @Translation("Display the referenced entities rendered by entity_view()."),
+ *   field_types = {
+ *     "entity_reference"
+ *   },
+ *   settings = {
+ *     "view_mode" = "",
+ *     "link" = FALSE
+ *   }
+ * )
+ */
+class EntityReferenceEntityFormatter extends EntityReferenceFormatterBase {
+
+  /**
+   * Overrides Drupal\entity_reference\Plugin\field\formatter\EntityReferenceFormatterBase::settingsForm().
+   */
+  public function settingsForm(array $form, array &$form_state) {
+    $entity_info = entity_get_info($this->field['settings']['target_type']);
+    $options = array();
+    if (!empty($entity_info['view modes'])) {
+      foreach ($entity_info['view modes'] as $view_mode => $view_mode_settings) {
+        $options[$view_mode] = $view_mode_settings['label'];
+      }
+    }
+
+    $elements['view_mode'] = array(
+      '#type' => 'select',
+      '#options' => $options,
+      '#title' => t('View mode'),
+      '#default_value' => $this->getSetting('view_mode'),
+      '#required' => TRUE,
+    );
+
+    $elements['links'] = array(
+      '#type' => 'checkbox',
+      '#title' => t('Show links'),
+      '#default_value' => $this->getSetting('links'),
+    );
+
+    return $elements;
+  }
+
+  /**
+   * Overrides Drupal\field\Plugin\Type\Formatter\FormatterBase::settingsSummary().
+   */
+  public function settingsSummary() {
+    $summary = array();
+
+    $entity_info = entity_get_info($this->field['settings']['target_type']);
+    $view_mode = $this->getSetting('view_mode');
+    $summary[] = t('Rendered as @mode', array('@mode' => isset($entity_info['view modes'][$view_mode]['label']) ? $entity_info['view modes'][$view_mode]['label'] : $view_mode));
+    $summary[] = $this->getSetting('links') ? t('Display links') : t('Do not display links');
+
+    return implode('<br />', $summary);
+  }
+
+  /**
+   * Overrides Drupal\entity_reference\Plugin\field\formatter\EntityReferenceFormatterBase::viewElements().
+   */
+  public function viewElements(EntityInterface $entity, $langcode, array $items) {
+    // Remove un-accessible items.
+    parent::viewElements($entity, $langcode, $items);
+
+    $view_mode = $this->getSetting('view_mode');
+    $links = $this->getSetting('links');
+
+    $target_type = $this->field['settings']['target_type'];
+
+    $elements = array();
+
+    foreach ($items as $delta => $item) {
+      // Protect ourselves from recursive rendering.
+      static $depth = 0;
+      $depth++;
+      if ($depth > 20) {
+        throw new RecursiveRenderingException(format_string('Recursive rendering detected when rendering entity @entity_type(@entity_id). Aborting rendering.', array('@entity_type' => $entity_type, '@entity_id' => $item['target_id'])));
+      }
+
+      if (!empty($item['entity'])) {
+        $entity = clone $item['entity'];
+        unset($entity->content);
+        $elements[$delta] = entity_view($entity, $view_mode, $langcode);
+
+        if (empty($links) && isset($result[$delta][$target_type][$item['target_id']]['links'])) {
+          // Hide the element links.
+          $elements[$delta][$target_type][$item['target_id']]['links']['#access'] = FALSE;
+        }
+      }
+      else {
+        // This is an "auto_create" item.
+        $elements[$delta] = array('#markup' => $item['label']);
+      }
+      $depth = 0;
+    }
+
+    return $elements;
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/formatter/EntityReferenceFormatterBase.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/formatter/EntityReferenceFormatterBase.php
new file mode 100644
index 0000000..ed8dc2e
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/formatter/EntityReferenceFormatterBase.php
@@ -0,0 +1,118 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\field\formatter\EntityReferenceFormatterBase.
+ */
+
+namespace Drupal\entity_reference\Plugin\field\formatter;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\field\Plugin\Type\Formatter\FormatterBase;
+
+/**
+ * Parent plugin for entity-reference formatters.
+ */
+abstract class EntityReferenceFormatterBase extends FormatterBase {
+
+  /**
+   * Overrides Drupal\field\Plugin\Type\Formatter\FormatterBase::prepareView().
+   *
+   * Mark the accessible IDs a user can see. We do not unset unaccessible
+   * values, as other may want to act on those values, even if they can
+   * not be accessed.
+   */
+  public function prepareView(array $entities, $langcode, array &$items) {
+    $target_ids = array();
+    $revision_ids = array();
+
+    // Collect every possible entity attached to any of the entities.
+    foreach ($entities as $id => $entity) {
+      foreach ($items[$id] as $delta => $item) {
+        if (!empty($item['revision_id'])) {
+          $revision_ids[] = $item['revision_id'];
+        }
+        elseif (!empty($item['target_id'])) {
+          $target_ids[] = $item['target_id'];
+        }
+      }
+    }
+
+    $target_type = $this->field['settings']['target_type'];
+
+    $target_entities = array();
+
+    if ($target_ids) {
+      $target_entities = entity_load_multiple($target_type, $target_ids);
+    }
+
+    if ($revision_ids) {
+      // We need to load the revisions one by-one.
+      foreach ($revision_ids as $revision_id) {
+        $entity = entity_revision_load($target_type, $revision_id);
+        // Use the revision-ID in the key.
+        $identifier = $entity->id() . ':' . $revision_id;
+        $target_entities[$identifier] = $entity;
+      }
+    }
+
+    // Iterate through the fieldable entities again to attach the loaded
+    // data.
+    foreach ($entities as $id => $entity) {
+      $rekey = FALSE;
+      foreach ($items[$id] as $delta => $item) {
+        // If we have a revision-ID, the key uses it as-well.
+        $identifier = !empty($item['revision_id']) ? $item['target_id'] . ':' . $item['revision_id'] : $item['target_id'];
+        if ($item['target_id'] != 'auto_create') {
+          if (!isset($target_entities[$identifier])) {
+            // The entity no longer exists, so remove the key.
+            $rekey = TRUE;
+            unset($items[$id][$delta]);
+            continue;
+          }
+
+          $entity = $target_entities[$identifier];
+          $items[$id][$delta]['entity'] = $entity;
+
+          // @todo: Improve when we have entity_access().
+          $entity_access = $target_type == 'node' ? node_access('view', $entity) : TRUE;
+          if (!$entity_access) {
+            continue;
+          }
+        }
+        else {
+          // This is an "auto_create" item, so allow access to it, as the entity doesn't
+          // exists yet, and we are probably in a preview.
+          $items[$id][$delta]['entity'] = FALSE;
+          // Add the label as a special key, as we cannot use entity_label().
+          $items[$id][$delta]['label'] = $item['label'];
+        }
+
+        // Mark item as accessible.
+        $items[$id][$delta]['access'] = TRUE;
+      }
+
+      if ($rekey) {
+        // Rekey the items array.
+        $items[$id] = array_values($items[$id]);
+      }
+    }
+  }
+
+  /**
+   * Overrides Drupal\field\Plugin\Type\Formatter\FormatterBase::viewElements().
+   *
+   * @see Drupal\entity_reference\Plugin\field\formatter\EntityReferenceFormatterBase::viewElements().
+   */
+  public function viewElements(EntityInterface $entity, $langcode, array $items) {
+    // Remove un-accessible items.
+    foreach ($items as $delta => $item) {
+      if (empty($item['access'])) {
+        unset($items[$delta]);
+      }
+    }
+    return array();
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/formatter/EntityReferenceIdFormatter.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/formatter/EntityReferenceIdFormatter.php
new file mode 100644
index 0000000..263a24e
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/formatter/EntityReferenceIdFormatter.php
@@ -0,0 +1,44 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\field\formatter\EntityReferenceIdFormatter.
+ */
+
+namespace Drupal\entity_reference\Plugin\field\formatter;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\entity_reference\Plugin\field\formatter\EntityReferenceFormatterBase;
+
+/**
+ * Plugin implementation of the 'entity-reference ID' formatter.
+ *
+ * @Plugin(
+ *   id = "entity_reference_entity_id",
+ *   module = "entity_reference",
+ *   label = @Translation("Entity ID"),
+ *   description = @Translation("Display the ID of the referenced entities."),
+ *   field_types = {
+ *     "entity_reference"
+ *   }
+ * )
+ */
+class EntityReferenceIdFormatter extends EntityReferenceFormatterBase {
+
+  /**
+   * Overrides Drupal\entity_reference\Plugin\field\formatter\EntityReferenceFormatterBase::viewElements().
+   */
+  public function viewElements(EntityInterface $entity, $langcode, array $items) {
+    $elements = array();
+
+    foreach ($items as $delta => $item) {
+      if (!empty($item['entity'])) {
+        $elements[$delta] = array('#markup' => check_plain($item['target_id']));
+      }
+    }
+
+    return $elements;
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/formatter/EntityReferenceLabelFormatter.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/formatter/EntityReferenceLabelFormatter.php
new file mode 100644
index 0000000..dce40e2
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/formatter/EntityReferenceLabelFormatter.php
@@ -0,0 +1,90 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\field\formatter\EntityReferenceLabelFormatter.
+ */
+
+namespace Drupal\entity_reference\Plugin\field\formatter;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\entity_reference\Plugin\field\formatter\EntityReferenceFormatterBase;
+
+/**
+ * Plugin implementation of the 'entity-reference label' formatter.
+ *
+ * @Plugin(
+ *   id = "entity_reference_label",
+ *   module = "entity_reference",
+ *   label = @Translation("Label"),
+ *   description = @Translation("Display the label of the referenced entities."),
+ *   field_types = {
+ *     "entity_reference"
+ *   },
+ *   settings = {
+ *     "link" = FALSE
+ *   }
+ * )
+ */
+class EntityReferenceLabelFormatter extends EntityReferenceFormatterBase {
+
+  /**
+   * Overrides Drupal\field\Plugin\Type\Formatter\FormatterBase::settingsForm().
+   */
+  public function settingsForm(array $form, array &$form_state) {
+    $elements['link'] = array(
+      '#title' => t('Link label to the referenced entity'),
+      '#type' => 'checkbox',
+      '#default_value' => $this->getSetting('link'),
+    );
+
+    return $elements;
+  }
+
+  /**
+   * Overrides Drupal\field\Plugin\Type\Formatter\FormatterBase::settingsSummary().
+   */
+  public function settingsSummary() {
+    $summary = array();
+    $summary[] = $this->getSetting('link') ? t('Link to the referenced entity') : t('No link');
+
+    return implode('<br />', $summary);
+  }
+
+  /**
+   * Overrides Drupal\entity_reference\Plugin\field\formatter\EntityReferenceFormatterBase::viewElements().
+   */
+  public function viewElements(EntityInterface $entity, $langcode, array $items) {
+    // Remove un-accessible items.
+    parent::viewElements($entity, $langcode, $items);
+
+    $elements = array();
+
+    foreach ($items as $delta => $item) {
+      if ($entity = $item['entity']) {
+        $label = $entity->label();
+        // If the link is to be displayed and the entity has a uri,
+        // display a link.
+        if ($this->getSetting('link') && $uri = $entity->uri()) {
+          $elements[$delta] = array(
+            '#type' => 'link',
+            '#title' => $label,
+            '#href' => $uri['path'],
+            '#options' => $uri['options'],
+          );
+        }
+        else {
+          $elements[$delta] = array('#markup' => check_plain($label));
+        }
+      }
+      else {
+        // This is an "auto_create" item.
+        $elements[$delta] = array('#markup' => $item['label']);
+      }
+    }
+
+    return $elements;
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/widget/AutocompleteTagsWidget.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/widget/AutocompleteTagsWidget.php
new file mode 100644
index 0000000..703684d
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/widget/AutocompleteTagsWidget.php
@@ -0,0 +1,73 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\field\widget\AutocompleteTagsWidget.
+ */
+
+namespace Drupal\entity_reference\Plugin\field\widget;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\entity_reference\Plugin\field\widget\AutocompleteWidgetBase;
+
+/**
+ * Plugin implementation of the 'entity_reference autocomplete-tags' widget.
+ *
+ * @Plugin(
+ *   id = "entity_reference_autocomplete_tags",
+ *   module = "entity_reference",
+ *   label = @Translation("Autocomplete (Tags style)"),
+ *   description = @Translation("An autocomplete text field."),
+ *   field_types = {
+ *     "entity_reference"
+ *   },
+ *   settings = {
+ *     "match_operator" = "CONTAINS",
+ *     "size" = 60,
+ *     "autocomplete_path" = "entity_reference/autocomplete/tags",
+ *     "placeholder" = ""
+ *   },
+ *   multiple_values = FIELD_BEHAVIOR_CUSTOM
+ * )
+ */
+class AutocompleteTagsWidget extends AutocompleteWidgetBase {
+
+  /**
+   * Overrides Drupal\entity_reference\Plugin\field\widget\AutocompleteWidgetBase::elementValidate()
+   */
+  public function elementValidate($element, &$form_state, $form) {
+    $value = array();
+    // If a value was entered into the autocomplete.
+    $handler = entity_reference_get_selection_handler($this->field, $this->instance);
+    $entity_info = entity_get_info($this->field['settings']['target_type']);
+    $auto_create = isset($this->instance['settings']['handler_settings']['auto_create']) ? $this->instance['settings']['handler_settings']['auto_create'] : FALSE;
+
+    if (!empty($element['#value'])) {
+      $entities = drupal_explode_tags($element['#value']);
+      $value = array();
+      foreach ($entities as $entity) {
+        $match = FALSE;
+
+        // Take "label (entity id)', match the id from parenthesis.
+        if (preg_match("/.+\((\d+)\)/", $entity, $matches)) {
+          $match = $matches[1];
+        }
+        else {
+          // Try to get a match from the input string when the user didn't use the
+          // autocomplete but filled in a value manually.
+          $match = $handler->validateAutocompleteInput($entity, $element, $form_state, $form, !$auto_create);
+        }
+
+        if ($match) {
+          $value[] = array('target_id' => $match);
+        }
+        elseif ($auto_create && (count($this->instance['settings']['handler_settings']['target_bundles']) == 1 || count($entity_info['bundles']) == 1)) {
+          // Auto-create item. see entity_reference_field_presave().
+          $value[] = array('target_id' => 'auto_create', 'label' => $entity);
+        }
+      }
+    }
+    form_set_value($element, $value, $form_state);
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/widget/AutocompleteWidget.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/widget/AutocompleteWidget.php
new file mode 100644
index 0000000..ad58bda
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/widget/AutocompleteWidget.php
@@ -0,0 +1,91 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\field\widget\AutocompleteWidget.
+ */
+
+namespace Drupal\entity_reference\Plugin\field\widget;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\entity_reference\Plugin\field\widget\AutocompleteWidgetBase;
+
+/**
+ * Plugin implementation of the 'entity_reference autocomplete' widget.
+ *
+ * @todo: Check if the following statement is still correct
+ * The autocomplete path doesn't have a default here, because it's not the
+ * the two widgets, and the Field API doesn't update default settings when
+ * the widget changes.
+ *
+ * @Plugin(
+ *   id = "entity_reference_autocomplete",
+ *   module = "entity_reference",
+ *   label = @Translation("Autocomplete"),
+ *   description = @Translation("An autocomplete text field."),
+ *   field_types = {
+ *     "entity_reference"
+ *   },
+ *   settings = {
+ *     "match_operator" = "CONTAINS",
+ *     "size" = 60,
+ *     "autocomplete_path" = "entity_reference/autocomplete/single",
+ *     "placeholder" = ""
+ *   }
+ * )
+ */
+class AutocompleteWidget extends AutocompleteWidgetBase {
+
+  /**
+   * Overrides Drupal\entity_reference\Plugin\field\widget\AutocompleteWidgetBase::formElement().
+   */
+  public function formElement(array $items, $delta, array $element, $langcode, array &$form, array &$form_state) {
+    // We let the Field API handles multiple values for us, only take care of
+    // the one matching our delta.
+    if (isset($items[$delta])) {
+      $items = array($items[$delta]);
+    }
+    else {
+      $items = array();
+    }
+
+    return parent::formElement($items, $delta, $element, $langcode, $form, $form_state);
+  }
+
+  /**
+   * Overrides Drupal\entity_reference\Plugin\field\widget\AutocompleteWidgetBase::elementValidate()
+   */
+  public function elementValidate($element, &$form_state, $form) {
+    $auto_create = isset($this->instance['settings']['handler_settings']['auto_create']) ? $this->instance['settings']['handler_settings']['auto_create'] : FALSE;
+
+    // If a value was entered into the autocomplete.
+    $value = '';
+    if (!empty($element['#value'])) {
+      // Take "label (entity id)', match the id from parenthesis.
+      if (preg_match("/.+\((\d+)\)/", $element['#value'], $matches)) {
+        $value = $matches[1];
+      }
+      else {
+        // Try to get a match from the input string when the user didn't use the
+        // autocomplete but filled in a value manually.
+        $handler = entity_reference_get_selection_handler($this->field, $this->instance);
+        $value = $handler->validateAutocompleteInput($element['#value'], $element, $form_state, $form, !$auto_create);
+      }
+
+      if (!$value && $auto_create && (count($this->instance['settings']['handler_settings']['target_bundles']) == 1 || count($entity_info['bundles']) == 1)) {
+        // Auto-create item. see entity_reference_field_presave().
+        $value = array(
+          'target_id' => 'auto_create',
+          'label' => $element['#value'],
+          // Keep the weight property.
+          '_weight' => $element['#weight'],
+        );
+        // Change the element['#parents'], so in form_set_value() we
+        // populate the correct key.
+        array_pop($element['#parents']);
+      }
+    }
+    form_set_value($element, $value, $form_state);
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/widget/AutocompleteWidgetBase.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/widget/AutocompleteWidgetBase.php
new file mode 100644
index 0000000..276b19b
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/field/widget/AutocompleteWidgetBase.php
@@ -0,0 +1,123 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\field\widget\AutocompleteWidgetBase.
+ */
+
+namespace Drupal\entity_reference\Plugin\field\widget;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\field\Plugin\Type\Widget\WidgetBase;
+
+/**
+ * Parent plugin for entity-reference autocomplete widgets.
+ */
+abstract class AutocompleteWidgetBase extends WidgetBase {
+
+  /**
+   * Overrides Drupal\field\Plugin\Type\Widget\WidgetBase::settingsForm().
+   */
+  public function settingsForm(array $form, array &$form_state) {
+    $element['match_operator'] = array(
+      '#type' => 'radios',
+      '#title' => t('Autocomplete matching'),
+      '#default_value' => $this->getSetting('match_operator'),
+      '#options' => array(
+        'STARTS_WITH' => t('Starts with'),
+        'CONTAINS' => t('Contains'),
+      ),
+      '#description' => t('Select the method used to collect autocomplete suggestions. Note that <em>Contains</em> can cause performance issues on sites with thousands of entities.'),
+    );
+    $element['size'] = array(
+      '#type' => 'number',
+      '#title' => t('Size of textfield'),
+      '#default_value' => $this->getSetting('size'),
+      '#min' => 1,
+      '#required' => TRUE,
+    );
+
+    $element['placeholder'] = array(
+      '#type' => 'textfield',
+      '#title' => t('Placeholder'),
+      '#default_value' => $this->getSetting('placeholder'),
+      '#description' => t('The placeholder is a short hint (a word or short phrase) intended to aid the user with data entry. A hint could be a sample value or a brief description of the expected format.'),
+    );
+
+
+    return $element;
+  }
+
+  /**
+   * Implements Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().
+   */
+  public function formElement(array $items, $delta, array $element, $langcode, array &$form, array &$form_state) {
+    $instance = $this->instance;
+    $field = $this->field;
+    $entity = isset($element['#entity']) ? $element['#entity'] : NULL;
+
+    // Prepare the autocomplete path.
+    $autocomplete_path = $this->getSetting('autocomplete_path');
+    $autocomplete_path .= '/' . $field['field_name'] . '/' . $instance['entity_type'] . '/' . $instance['bundle'] . '/';
+
+    // Use <NULL> as a placeholder in the URL when we don't have an entity.
+    // Most web servers collapse two consecutive slashes.
+    $id = 'NULL';
+    if ($entity && $entity_id = $entity->id()) {
+      $id = $entity_id;
+    }
+    $autocomplete_path .= $id;
+
+    $element += array(
+      '#type' => 'textfield',
+      '#maxlength' => 1024,
+      '#default_value' => implode(', ', $this->getLabels($items)),
+      '#autocomplete_path' => $autocomplete_path,
+      '#size' => $this->getSetting('size'),
+      '#placeholder' => $this->getSetting('placeholder'),
+      '#element_validate' => array(array($this, 'elementValidate')),
+    );
+
+    return array('target_id' => $element);
+  }
+
+  /**
+   * Overrides Drupal\field\Plugin\Type\Widget\WidgetBase::errorElement().
+   */
+  public function errorElement(array $element, array $error, array $form, array &$form_state) {
+    return $element['target_id'];
+  }
+
+  /**
+   * Validates an element.
+   */
+  public function elementValidate($element, &$form_state, $form) { }
+
+  /**
+   * Gets the entity labels.
+   */
+  protected function getLabels(array $items) {
+    $entity_ids = array();
+    $entity_labels = array();
+
+    // Build an array of entities ID.
+    foreach ($items as $item) {
+      $entity_ids[] = $item['target_id'];
+    }
+
+    // Load those entities and loop through them to extract their labels.
+    $entities = entity_load_multiple($this->field['settings']['target_type'], $entity_ids);
+
+    foreach ($entities as $entity_id => $entity_item) {
+      $label = $entity_item->label();
+      $key = "$label ($entity_id)";
+      // Labels containing commas or quotes must be wrapped in quotes.
+      if (strpos($key, ',') !== FALSE || strpos($key, '"') !== FALSE) {
+        $key = '"' . str_replace('"', '""', $key) . '"';
+      }
+      $entity_labels[] = $key;
+    }
+    return $entity_labels;
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/views/display/EntityReference.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/views/display/EntityReference.php
new file mode 100644
index 0000000..9327aa5
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/views/display/EntityReference.php
@@ -0,0 +1,183 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\views\display\EntityReference.
+ */
+
+namespace Drupal\entity_reference\Plugin\views\display;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\views\Plugin\views\display\DisplayPluginBase;
+
+/**
+ * The plugin that handles an EntityReference display.
+ *
+ * "entity_reference_display" is a custom property, used with
+ * views_get_applicable_views() to retrieve all views with a
+ * 'Entity Reference' display.
+ *
+ * @ingroup views_display_plugins
+ *
+ * @Plugin(
+ *   id = "entity_reference",
+ *   title = @Translation("EntityReference"),
+ *   admin = @Translation("Entity Reference Source"),
+ *   help = @Translation("Selects referenceable entities for an entity reference field."),
+ *   theme = "views_view",
+ *   uses_hook_menu = FALSE,
+ *  entity_reference_display = TRUE
+ * )
+ */
+class EntityReference extends DisplayPluginBase {
+
+  /**
+   * Overrides Drupal\views\Plugin\views\display\DisplayPluginBase::$useAJAX.
+   */
+  protected $usesAJAX = FALSE;
+
+  /**
+   * Overrides Drupal\views\Plugin\views\display\DisplayPluginBase::$usesPager.
+   */
+  protected $usesPager = FALSE;
+
+  /**
+   * Overrides Drupal\views\Plugin\views\display\DisplayPluginBase::$usesAttachments.
+   */
+  protected $usesAttachments = FALSE;
+
+  /**
+   * Overrides Drupal\views\Plugin\views\display\DisplayPluginBase::defineOptions().
+   */
+  protected function defineOptions() {
+    $options = parent::defineOptions();
+
+    // Force the style plugin to 'entity_reference_style' and the row plugin to
+    // 'fields'.
+    $options['style']['contains']['type'] = array('default' => 'entity_reference');
+    $options['defaults']['default']['style'] = FALSE;
+    $options['row']['contains']['type'] = array('default' => 'entity_reference');
+    $options['defaults']['default']['row'] = FALSE;
+
+    // Make sure the query is not cached.
+    $options['defaults']['default']['cache'] = FALSE;
+
+    // Set the display title to an empty string (not used in this display type).
+    $options['title']['default'] = '';
+    $options['defaults']['default']['title'] = FALSE;
+
+    return $options;
+  }
+
+  /**
+   * Overrides Drupal\views\Plugin\views\display\DisplayPluginBase::optionsSummary().
+   *
+   * Disable 'cache' and 'title' so it won't be changed.
+   */
+  public function optionsSummary(&$categories, &$options) {
+    parent::optionsSummary($categories, $options);
+    unset($options['query']);
+    unset($options['title']);
+  }
+
+  /**
+   * Overrides Drupal\views\Plugin\views\display\DisplayPluginBase::getStyleType().
+   */
+  protected function getStyleType() {
+    return 'entity_reference';
+  }
+
+  /**
+   * Overrides Drupal\views\Plugin\views\display\DisplayPluginBase::execute().
+   */
+  public function execute() {
+    return $this->view->render($this->display['id']);
+  }
+
+  /**
+   * Overrides Drupal\views\Plugin\views\display\DisplayPluginBase::render().
+   */
+  public function render() {
+    if (!empty($this->view->result) && $this->view->style_plugin->even_empty()) {
+      return $this->view->style_plugin->render($this->view->result);
+    }
+    return '';
+  }
+
+  /**
+   * Overrides Drupal\views\Plugin\views\display\DisplayPluginBase::usesExposed().
+   */
+  public function usesExposed() {
+    return FALSE;
+  }
+
+  /**
+   * Overrides Drupal\views\Plugin\views\display\DisplayPluginBase::query().
+   */
+  public function query() {
+    if (!empty($this->view->live_preview)) {
+      return;
+    }
+
+    // Make sure the id field is included in the results.
+    $id_field = $this->view->storage->get('base_field');
+    $this->id_field_alias = $this->view->query->add_field($this->view->storage->get('base_table'), $id_field);
+
+    $options = $this->getOption('entity_reference_options');
+
+    // Restrict the autocomplete options based on what's been typed already.
+    if (isset($options['match'])) {
+      $style_options = $this->getOption('style');
+      $value = db_like($options['match']) . '%';
+      if ($options['match_operator'] != 'STARTS_WITH') {
+        $value = '%' . $value;
+      }
+
+      // Multiple search fields are OR'd together
+      $conditions = db_or();
+
+      // Build the condition using the selected search fields
+      foreach ($style_options['options']['search_fields'] as $field_alias) {
+        if (!empty($field_alias)) {
+          // Get the table and field names for the checked field
+          $field = $this->view->query->fields[$this->view->field[$field_alias]->field_alias];
+          // Add an OR condition for the field
+          $conditions->condition($field['table'] . '.' . $field['field'], $value, 'LIKE');
+        }
+      }
+
+      $this->view->query->add_where(0, $conditions);
+    }
+
+    // Add an IN condition for validation.
+    if (!empty($options['ids'])) {
+      $this->view->query->add_where(0, $id_field, $options['ids']);
+    }
+
+    $this->view->setItemsPerPage($options['limit']);
+  }
+
+  /**
+   * Overrides Drupal\views\Plugin\views\display\DisplayPluginBase::validate().
+   */
+  public function validate() {
+    $errors = parent::validate();
+    // Verify that search fields are set up.
+    $style = $this->getOption('style');
+    if (!isset($style['options']['search_fields'])) {
+      $errors[] = t('Display "@display" needs a selected search fields to work properly. See the settings for the Entity Reference list format.', array('@display' => $this->display['display_title']));
+    }
+    else {
+      // Verify that the search fields used actually exist.
+      //$fields = array_keys($this->view->get_items('field'));
+      $fields = array_keys($this->handlers['field']);
+      foreach ($style['options']['search_fields'] as $field_alias => $enabled) {
+        if ($enabled && !in_array($field_alias, $fields)) {
+          $errors[] = t('Display "@display" uses field %field as search field, but the field is no longer present. See the settings for the Entity Reference list format.', array('@display' => $this->display['display_title'], '%field' => $field_alias));
+        }
+      }
+    }
+    return $errors;
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/views/row/EntityReference.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/views/row/EntityReference.php
new file mode 100644
index 0000000..7e3a970
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/views/row/EntityReference.php
@@ -0,0 +1,61 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\views\row\EntityReference.
+ */
+
+namespace Drupal\entity_reference\Plugin\views\row;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\views\Plugin\views\row\Fields;
+
+/**
+ * EntityReference row plugin.
+ *
+ * @ingroup views_row_plugins
+ *
+ * @Plugin(
+ *   id = "entity_reference",
+ *   title = @Translation("Entity Reference inline fields"),
+ *   help = @Translation("Displays the fields with an optional template."),
+ *   theme = "views_view_fields",
+ *   type = "entity_reference"
+ * )
+ */
+class EntityReference extends Fields {
+
+  /**
+   * Overrides Drupal\views\Plugin\views\row\Fields::defineOptions().
+   */
+  protected function defineOptions() {
+    $options = parent::defineOptions();
+    $options['separator'] = array('default' => '-');
+
+    return $options;
+  }
+
+  /**
+   * Overrides Drupal\views\Plugin\views\row\Fields::buildOptionsForm().
+   */
+  public function buildOptionsForm(&$form, &$form_state) {
+    parent::buildOptionsForm($form, $form_state);
+
+    // Expand the description of the 'Inline field' checkboxes.
+    $form['inline']['#description'] .= '<br />' . t("<strong>Note:</strong> In 'Entity Reference' displays, all fields will be displayed inline unless an explicit selection of inline fields is made here." );
+  }
+
+  /**
+   * Overrides Drupal\views\Plugin\views\row\Fields::pre_render().
+   */
+  public function pre_render($row) {
+    // Force all fields to be inline by default.
+    if (empty($this->options['inline'])) {
+      $fields = $this->view->getItems('field', $this->displayHandler->display['id']);
+      $this->options['inline'] = drupal_map_assoc(array_keys($fields));
+    }
+
+    return parent::pre_render($row);
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/views/style/EntityReference.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/views/style/EntityReference.php
new file mode 100644
index 0000000..c15c2ae
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/views/style/EntityReference.php
@@ -0,0 +1,120 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Plugin\views\style\EntityReference.
+ */
+
+namespace Drupal\entity_reference\Plugin\views\style;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\views\Plugin\views\style\StylePluginBase;
+
+/**
+ * EntityReference style plugin.
+ *
+ * @ingroup views_style_plugins
+ *
+ * @Plugin(
+ *   id = "entity_reference",
+ *   title = @Translation("Entity Reference list"),
+ *   help = @Translation("Returns results as a PHP array of labels and rendered rows."),
+ *   theme = "views_view_unformatted",
+ *   type = "entity_reference"
+ * )
+ */
+class EntityReference extends StylePluginBase {
+
+  /**
+   * Overrides Drupal\views\Plugin\views\style\StylePluginBase::usesRowPlugin.
+   */
+  protected $usesRowPlugin = TRUE;
+
+  /**
+   * Overrides Drupal\views\Plugin\views\style\StylePluginBase::usesFields.
+   */
+  protected $usesFields = TRUE;
+
+  /**
+   * Overrides Drupal\views\Plugin\views\style\StylePluginBase::usesGrouping.
+   */
+  protected $usesGrouping = FALSE;
+
+  /**
+   * Overrides Drupal\views\Plugin\views\style\StylePluginBase\StylePluginBase::defineOptions().
+   */
+  protected function defineOptions() {
+    $options = parent::defineOptions();
+    $options['search_fields'] = array('default' => NULL);
+
+    return $options;
+  }
+
+  /**
+   * Overrides Drupal\views\Plugin\views\style\StylePluginBase\StylePluginBase::buildOptionsForm().
+   */
+  public function buildOptionsForm(&$form, &$form_state) {
+    parent::buildOptionsForm($form, $form_state);
+
+    $options = $this->displayHandler->getFieldLabels(TRUE);
+    $form['search_fields'] = array(
+      '#type' => 'checkboxes',
+      '#title' => t('Search fields'),
+      '#options' => $options,
+      '#required' => TRUE,
+      '#default_value' => $this->options['search_fields'],
+      '#description' => t('Select the field(s) that will be searched when using the autocomplete widget.'),
+      '#weight' => -3,
+    );
+  }
+
+  /**
+   * Overrides Drupal\views\Plugin\views\style\StylePluginBase\StylePluginBase::render().
+   */
+  public function render() {
+    if (!empty($this->view->live_preview)) {
+      return parent::render();
+    }
+
+    // Group the rows according to the grouping field, if specified.
+    $sets = $this->render_grouping($this->view->result, $this->options['grouping']);
+
+    // Grab the alias of the 'id' field added by entity_reference_plugin_display.
+    $id_field_alias = $this->view->storage->get('base_field');
+
+    // @todo We don't display grouping info for now. Could be useful for select
+    // widget, though.
+    $results = array();
+    $this->view->row_index = 0;
+    foreach ($sets as $records) {
+      foreach ($records as $values) {
+        // Sanitize html, remove line breaks and extra whitespace.
+        $output = $this->row_plugin->render($values);
+        $output = drupal_render($output);
+        $results[$values->{$id_field_alias}] = filter_xss_admin(preg_replace('/\s\s+/', ' ', str_replace("\n", '', $output)));
+        $this->view->row_index++;
+      }
+    }
+    unset($this->view->row_index);
+    return $results;
+  }
+
+  /**
+   * Overrides Drupal\views\Plugin\views\display\PathPluginBase::preview().
+   */
+  public function preview() {
+    if (!empty($this->view->live_preview)) {
+      return '<pre>' . check_plain($this->view->render()) . '</pre>';
+    }
+
+    return $this->view->render();
+  }
+
+  /**
+   * Overrides Drupal\views\Plugin\views\style\StylePluginBase\StylePluginBase::even_empty().
+   */
+  function even_empty() {
+    return TRUE;
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/RecursiveRenderingException.php b/core/modules/entity_reference/lib/Drupal/entity_reference/RecursiveRenderingException.php
new file mode 100644
index 0000000..e0fce9c
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/RecursiveRenderingException.php
@@ -0,0 +1,14 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\RecursiveRenderingException.
+ */
+
+namespace Drupal\entity_reference;
+
+/**
+ * Exception thrown when the entity view renderer goes into a potentially
+ * infinite loop.
+ */
+class RecursiveRenderingException extends \Exception {}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceAdminTest.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceAdminTest.php
new file mode 100644
index 0000000..4e68fc4
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceAdminTest.php
@@ -0,0 +1,108 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Tests\EntityReferenceAdminTest.
+ */
+
+namespace Drupal\entity_reference\Tests;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests the Entity reference Admin UI.
+ */
+class EntityReferenceAdminTest extends WebTestBase {
+  public static function getInfo() {
+    return array(
+      'name' => 'Entity reference UI',
+      'description' => 'Tests for the administrative UI.',
+      'group' => 'Entity Reference',
+    );
+  }
+
+  public static $modules = array('field_ui', 'entity_reference');
+
+  public function setUp() {
+    parent::setUp();
+
+    // Create test user.
+    $this->admin_user = $this->drupalCreateUser(array('access content', 'administer node fields'));
+    $this->drupalLogin($this->admin_user);
+
+    // Create content type, with underscores.
+    $type_name = strtolower($this->randomName(8)) . '_test';
+    $type = $this->drupalCreateContentType(array('name' => $type_name, 'type' => $type_name));
+    $this->type = $type->type;
+  }
+
+  protected function assertFieldSelectOptions($name, $expected_options) {
+    $xpath = $this->buildXPathQuery('//select[@name=:name]', array(':name' => $name));
+    $fields = $this->xpath($xpath);
+    if ($fields) {
+      $field = $fields[0];
+      $options = $this->getAllOptionsList($field);
+      return $this->assertIdentical($options, $expected_options);
+    }
+    else {
+      return $this->fail(t('Unable to find field @name', array('@name' => $name)));
+    }
+  }
+
+  /**
+   * Extract all the options of a select element.
+   */
+  protected function getAllOptionsList($element) {
+    $options = array();
+    // Add all options items.
+    foreach ($element->option as $option) {
+      $options[] = (string) $option['value'];
+    }
+    // TODO: support optgroup.
+    return $options;
+  }
+
+  public function testFieldAdminHandler() {
+    $bundle_path = 'admin/structure/types/manage/' . $this->type;
+
+    // First step: 'Add new field' on the 'Manage fields' page.
+    $this->drupalPost($bundle_path . '/fields', array(
+      'fields[_add_new_field][label]' => 'Test label',
+      'fields[_add_new_field][field_name]' => 'test',
+      'fields[_add_new_field][type]' => 'entity_reference',
+      'fields[_add_new_field][widget_type]' => 'entity_reference_autocomplete',
+    ), t('Save'));
+
+    // Node should be selected by default.
+    $this->assertFieldByName('field[settings][target_type]', 'node');
+
+    // Second step: 'Instance settings' form.
+    $this->drupalPost(NULL, array(), t('Save field settings'));
+
+    // The base handler should be selected by default.
+    $this->assertFieldByName('instance[settings][handler]', 'default');
+
+    // The base handler settings should be displayed.
+    $entity_type = 'node';
+    $entity_info = entity_get_info($entity_type);
+    foreach ($entity_info['bundles'] as $bundle_name => $bundle_info) {
+      $this->assertFieldByName('instance[settings][handler_settings][target_bundles][' . $bundle_name . ']');
+    }
+
+    // Test the sort settings.
+    // Option 0: no sort.
+    $this->assertFieldByName('instance[settings][handler_settings][sort][field]', '_none');
+    $this->assertNoFieldByName('instance[settings][handler_settings][sort][direction]');
+    // Option 1: sort by field.
+    $this->drupalPostAJAX(NULL, array('instance[settings][handler_settings][sort][field]' => 'nid'), 'instance[settings][handler_settings][sort][field]');
+    $this->assertFieldByName('instance[settings][handler_settings][sort][direction]', 'ASC');
+    // Set back to no sort.
+    $this->drupalPostAJAX(NULL, array('instance[settings][handler_settings][sort][field]' => '_none'), 'instance[settings][handler_settings][sort][field]');
+
+    // Third step: confirm.
+    $this->drupalPost(NULL, array(), t('Save settings'));
+
+    // Check that the field appears in the overview form.
+    $this->assertFieldByXPath('//table[@id="field-overview"]//td[1]', 'Test label', t('Field was created and appears in the overview page.'));
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceAutoCreateTest.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceAutoCreateTest.php
new file mode 100644
index 0000000..821ac44
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceAutoCreateTest.php
@@ -0,0 +1,111 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Tests\EntityReferenceAutoCreateTest.
+ */
+
+namespace Drupal\entity_reference\Tests;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests the Entity reference auto-creation feature.
+ */
+class EntityReferenceAutoCreateTest extends WebTestBase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Entity reference auto-create',
+      'description' => 'Tests creating new entity (e.g. taxonomy-term) from an autocomplete widget.',
+      'group' => 'Entity Reference',
+    );
+  }
+
+  public static $modules = array('entity_reference', 'node');
+
+  function setUp() {
+    parent::setUp();
+
+    // Create a "referencing" and "referenced" node types.
+    $referencing = $this->drupalCreateContentType();
+    $this->referencing_type = $referencing->type;
+
+    $referenced = $this->drupalCreateContentType();
+    $this->referenced_type = $referenced->type;
+
+    $field = array(
+      'translatable' => FALSE,
+      'entity_types' => array(),
+      'settings' => array(
+        'target_type' => 'node',
+      ),
+      'field_name' => 'test_field',
+      'type' => 'entity_reference',
+      'cardinality' => FIELD_CARDINALITY_UNLIMITED,
+    );
+
+    field_create_field($field);
+
+    $instance = array(
+      'label' => 'Entity reference field',
+      'field_name' => 'test_field',
+      'entity_type' => 'node',
+      'bundle' => $referencing->type,
+      'settings' => array(
+        'handler' => 'default',
+        'handler_settings' => array(
+          // Reference a single vocabulary.
+          'target_bundles' => array(
+            $referenced->type,
+          ),
+          // Enable auto-create.
+          'auto_create' => TRUE,
+        ),
+      ),
+    );
+
+    field_create_instance($instance);
+  }
+
+  /**
+   * Assert creation on a new entity.
+   */
+  public function testAutoCreate() {
+    $user1 = $this->drupalCreateUser(array('access content', "create $this->referencing_type content"));
+    $this->drupalLogin($user1);
+
+    $new_title = $this->randomName();
+
+    // Assert referenced node does not exist.
+    $base_query = entity_query('node');
+    $base_query
+      ->condition('type', $this->referenced_type)
+      ->condition('title', $new_title);
+
+    $query = clone $base_query;
+    $result = $query->execute();
+    $this->assertFalse($result, 'Referenced node does not exist yet.');
+
+    $edit = array(
+      'title' => $this->randomName(),
+      'test_field[und][0][target_id]' => $new_title,
+    );
+    $this->drupalPost("node/add/$this->referencing_type", $edit, 'Save');
+
+    // Assert referenced node was created.
+    $query = clone $base_query;
+    $result = $query->execute();
+    $this->assertTrue($result, 'Referenced node was created.');
+    $referenced_nid = key($result);
+
+    // Assert the referenced node is associated with referencing node.
+    $result = entity_query('node')
+      ->condition('type', $this->referencing_type)
+      ->execute();
+
+    $referencing_nid = key($result);
+    $referencing_node = node_load($referencing_nid);
+    $this->assertEqual($referenced_nid, $referencing_node->test_field[LANGUAGE_NOT_SPECIFIED][0]['target_id'], 'Newly created node is referenced from the referencing node.');
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceAutocompleteTest.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceAutocompleteTest.php
new file mode 100644
index 0000000..968f9bb
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceAutocompleteTest.php
@@ -0,0 +1,114 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Tests\EntityReferenceAutocompleteTest.
+ */
+
+namespace Drupal\entity_reference\Tests;
+
+use Drupal\taxonomy\Tests\TaxonomyTestBase;
+
+class EntityReferenceAutocompleteTest extends TaxonomyTestBase {
+
+  public static $modules = array('entity_reference', 'taxonomy');
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Autocomplete',
+      'description' => 'Tests autocomplete menu item.',
+      'group' => 'Entity Reference',
+    );
+  }
+
+  function setUp() {
+    parent::setUp();
+
+    $this->admin_user = $this->drupalCreateUser(array('administer taxonomy', 'bypass node access'));
+    $this->drupalLogin($this->admin_user);
+    $this->vocabulary = $this->createVocabulary();
+
+    $this->field_name = 'taxonomy_' . $this->vocabulary->id();
+
+    $field = array(
+      'field_name' => $this->field_name,
+      'type' => 'entity_reference',
+      'cardinality' => FIELD_CARDINALITY_UNLIMITED,
+      'settings' => array(
+        'target_type' => 'taxonomy_term',
+      ),
+    );
+    field_create_field($field);
+
+    $this->instance = array(
+      'field_name' => $this->field_name,
+      'bundle' => 'article',
+      'entity_type' => 'node',
+      'widget' => array(
+        'type' => 'options_select',
+      ),
+      'settings' => array(
+        'handler' => 'default',
+        'handler_settings' => array(
+          'target_bundles' => array(
+            $this->vocabulary->id(),
+          ),
+          'auto_create' => TRUE,
+        ),
+      ),
+    );
+    field_create_instance($this->instance);
+    entity_get_display('node', 'article', 'default')
+      ->setComponent($this->instance['field_name'], array(
+        'type' => 'entity_reference_label',
+      ))
+      ->save();
+  }
+
+  /**
+   * Tests autocompletion edge cases with slashes in the names.
+   */
+  function testTermAutocompletion() {
+    // Add a term with a slash in the name.
+    $first_term = $this->createTerm($this->vocabulary);
+    $first_term->name = '10/16/2011';
+    taxonomy_term_save($first_term);
+    // Add another term that differs after the slash character.
+    $second_term = $this->createTerm($this->vocabulary);
+    $second_term->name = '10/17/2011';
+    taxonomy_term_save($second_term);
+    // Add another term that has both a comma and a slash character.
+    $third_term = $this->createTerm($this->vocabulary);
+    $third_term->name = 'term with, a comma and / a slash';
+    taxonomy_term_save($third_term);
+
+    // Set the path prefix to point to entity reference's autocomplete path.
+    $path_prefix = 'entity_reference/autocomplete/single/' . $this->field_name . '/node/article/NULL';
+
+    // Try to autocomplete a term name that matches both terms.
+    // We should get both term in a json encoded string.
+    $input = '10/';
+    $result = $this->drupalGet($path_prefix, array('query' => array('q' => $input)));
+    $data = drupal_json_decode($result);
+    $this->assertEqual(strip_tags($data[$first_term->name. ' (1)']), check_plain($first_term->name), 'Autocomplete returned the first matching term');
+    $this->assertEqual(strip_tags($data[$second_term->name. ' (2)']), check_plain($second_term->name), 'Autocomplete returned the second matching term');
+
+    // Try to autocomplete a term name that matches first term.
+    // We should only get the first term in a json encoded string.
+    $input = '10/16';
+    $this->drupalGet($path_prefix, array('query' => array('q' => $input)));
+    $target = array($first_term->name . ' (1)' => '<div class="reference-autocomplete">' . check_plain($first_term->name) . '</div>');
+    $this->assertRaw(drupal_json_encode($target), 'Autocomplete returns only the expected matching term.');
+
+    // Try to autocomplete a term name with both a comma and a slash.
+    $input = '"term with, comma and / a';
+    $this->drupalGet($path_prefix, array('query' => array('q' => $input)));
+    $n = $third_term->name;
+    // Term names containing commas or quotes must be wrapped in quotes.
+    if (strpos($third_term->name, ',') !== FALSE || strpos($third_term->name, '"') !== FALSE) {
+      $n = '"' . str_replace('"', '""', $third_term->name) .  ' (3)"';
+    }
+    $target = array($n => '<div class="reference-autocomplete">' . check_plain($third_term->name) . '</div>');
+    $this->assertRaw(drupal_json_encode($target), 'Autocomplete returns a term containing a comma and a slash.');
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceItemTest.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceItemTest.php
new file mode 100644
index 0000000..7a0f326
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceItemTest.php
@@ -0,0 +1,103 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Tests\EntityReferenceItemTest.
+ */
+
+namespace Drupal\entity_reference\Tests;
+
+use Drupal\simpletest\WebTestBase;
+use Drupal\entity_reference\Type\EntityReferenceItem;
+use Drupal\Core\Entity\Field\FieldItemInterface;
+use Drupal\Core\Entity\Field\FieldInterface;
+
+/**
+ * Tests the new entity API for the entity reference field type.
+ */
+class EntityReferenceItemTest extends WebTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = array('field', 'field_sql_storage', 'entity_test', 'options', 'entity_reference');
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Entity reference field API',
+      'description' => 'Tests using entity fields of the entity-reference field type.',
+      'group' => 'Entity Reference',
+    );
+  }
+
+  public function setUp() {
+    parent::setUp();
+
+    $field = array(
+      'translatable' => FALSE,
+      'entity_types' => array(),
+      'settings' => array(
+        'target_type' => 'node',
+      ),
+      'field_name' => 'field_test',
+      'type' => 'entity_reference',
+      'cardinality' => FIELD_CARDINALITY_UNLIMITED,
+    );
+
+    field_create_field($field);
+
+    $instance = array(
+      'entity_type' => 'entity_test',
+      'field_name' => 'field_test',
+      'bundle' => 'entity_test',
+      'widget' => array(
+        'type' => 'options_select',
+      ),
+      'settings' => array(
+        'handler' => 'default',
+        'handler_settings' => array(),
+      ),
+    );
+    field_create_instance($instance);
+  }
+
+  /**
+   * Tests using entity fields of the taxonomy term reference field type.
+   */
+  public function testEntityReferenceItem() {
+    // Create a node.
+    $node1 = $this->drupalCreateNode();
+    $nid = $node1->id();
+
+    // Just being able to create the entity like this verifies a lot of
+    // code.
+    $entity = entity_create('entity_test', array('name' => 'foo'));
+    $entity->field_test->target_id = $nid;
+    $entity->save();
+
+    $this->assertTrue($entity->field_test instanceof FieldInterface, 'Field implements interface.');
+    $this->assertTrue($entity->field_test[0] instanceof FieldItemInterface, 'Field item implements interface.');
+    $this->assertEqual($entity->field_test->target_id, $nid);
+    $this->assertEqual($entity->field_test->entity->title, $node1->label());
+    $this->assertEqual($entity->field_test->entity->id(), $nid);
+    $this->assertEqual($entity->field_test->entity->uuid(), $node1->uuid());
+
+    // Change the name of the term via the reference.
+    $new_name = $this->randomName();
+    $entity->field_test->entity->title = $new_name;
+    $entity->field_test->entity->save();
+
+    // Verify it is the correct name.
+    $node = node_load($nid);
+    $this->assertEqual($node->label(), $new_name);
+
+    // Make sure the computed node reflects updates to the node id.
+    $node2 = $this->drupalCreateNode();
+
+    $entity->field_test->target_id = $node2->nid;
+    $this->assertEqual($entity->field_test->entity->id(), $node2->id());
+    $this->assertEqual($entity->field_test->entity->title, $node2->label());
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceSelectionAccessTest.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceSelectionAccessTest.php
new file mode 100644
index 0000000..048e1ed
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceSelectionAccessTest.php
@@ -0,0 +1,495 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Tests\EntityReferenceSelectionAccessTest.
+ */
+
+namespace Drupal\entity_reference\Tests;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests the Entity reference Selection plugin.
+ */
+class EntityReferenceSelectionAccessTest extends WebTestBase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Entity reference handlers',
+      'description' => 'Tests for the base handlers provided by Entity Reference.',
+      'group' => 'Entity Reference',
+    );
+  }
+
+  public static $modules = array('node', 'comment', 'entity_reference');
+
+  function setUp() {
+    parent::setUp();
+
+    // Create an Article node type.
+    $this->drupalCreateContentType(array('type' => 'article', 'name' => 'Article'));
+  }
+
+  protected function assertReferencable($field, $instance, $tests, $handler_name) {
+    $handler = entity_reference_get_selection_handler($field, $instance);
+
+    foreach ($tests as $test) {
+      foreach ($test['arguments'] as $arguments) {
+        $result = call_user_func_array(array($handler, 'getReferencableEntities'), $arguments);
+        $this->assertEqual($result, $test['result'], format_string('Valid result set returned by @handler.', array('@handler' => $handler_name)));
+
+        $result = call_user_func_array(array($handler, 'countReferencableEntities'), $arguments);
+        if (!empty($test['result'])) {
+          $bundle = key($test['result']);
+          $count = count($test['result'][$bundle]);
+        }
+        else {
+          $count = 0;
+        }
+
+        $this->assertEqual($result, $count, format_string('Valid count returned by @handler.', array('@handler' => $handler_name)));
+      }
+    }
+  }
+
+  /**
+   * Test the node-specific overrides of the entity handler.
+   */
+  public function testNodeHandler() {
+    // Build a fake field instance.
+    $field = array(
+      'translatable' => FALSE,
+      'entity_types' => array(),
+      'settings' => array(
+        'target_type' => 'node',
+      ),
+      'field_name' => 'test_field',
+      'type' => 'entity_reference',
+      'cardinality' => '1',
+    );
+    $instance = array(
+      'settings' => array(
+        'handler' => 'default',
+        'handler_settings' => array(
+          'target_bundles' => array(),
+        ),
+      ),
+    );
+
+    // Build a set of test data.
+    // Titles contain HTML-special characters to test escaping.
+    $node_values = array(
+      'published1' => array(
+        'type' => 'article',
+        'status' => NODE_PUBLISHED,
+        'title' => 'Node published1 (<&>)',
+        'uid' => 1,
+      ),
+      'published2' => array(
+        'type' => 'article',
+        'status' => NODE_PUBLISHED,
+        'title' => 'Node published2 (<&>)',
+        'uid' => 1,
+      ),
+      'unpublished' => array(
+        'type' => 'article',
+        'status' => NODE_NOT_PUBLISHED,
+        'title' => 'Node unpublished (<&>)',
+        'uid' => 1,
+      ),
+    );
+
+    $nodes = array();
+    $node_labels = array();
+    foreach ($node_values as $key => $values) {
+      $node = entity_create('node', $values);
+      $node->save();
+      $nodes[$key] = $node;
+      $node_labels[$key] = check_plain($node->label());
+    }
+
+    // Test as a non-admin.
+    $normal_user = $this->drupalCreateUser(array('access content'));
+    $GLOBALS['user'] = $normal_user;
+    $referencable_tests = array(
+      array(
+        'arguments' => array(
+          array(NULL, 'CONTAINS'),
+        ),
+        'result' => array(
+          'article' => array(
+            $nodes['published1']->nid => $node_labels['published1'],
+            $nodes['published2']->nid => $node_labels['published2'],
+          ),
+        ),
+      ),
+      array(
+        'arguments' => array(
+          array('published1', 'CONTAINS'),
+          array('Published1', 'CONTAINS'),
+        ),
+        'result' => array(
+          'article' => array(
+            $nodes['published1']->nid => $node_labels['published1'],
+          ),
+        ),
+      ),
+      array(
+        'arguments' => array(
+          array('published2', 'CONTAINS'),
+          array('Published2', 'CONTAINS'),
+        ),
+        'result' => array(
+          'article' => array(
+            $nodes['published2']->nid => $node_labels['published2'],
+          ),
+        ),
+      ),
+      array(
+        'arguments' => array(
+          array('invalid node', 'CONTAINS'),
+        ),
+        'result' => array(),
+      ),
+      array(
+        'arguments' => array(
+          array('Node unpublished', 'CONTAINS'),
+        ),
+        'result' => array(),
+      ),
+    );
+    $this->assertReferencable($field, $instance, $referencable_tests, 'Node handler');
+
+    // Test as an admin.
+    $admin_user = $this->drupalCreateUser(array('access content', 'bypass node access'));
+    $GLOBALS['user'] = $admin_user;
+    $referencable_tests = array(
+      array(
+        'arguments' => array(
+          array(NULL, 'CONTAINS'),
+        ),
+        'result' => array(
+          'article' => array(
+            $nodes['published1']->nid => $node_labels['published1'],
+            $nodes['published2']->nid => $node_labels['published2'],
+            $nodes['unpublished']->nid => $node_labels['unpublished'],
+          ),
+        ),
+      ),
+      array(
+        'arguments' => array(
+          array('Node unpublished', 'CONTAINS'),
+        ),
+        'result' => array(
+          'article' => array(
+            $nodes['unpublished']->nid => $node_labels['unpublished'],
+          ),
+        ),
+      ),
+    );
+    $this->assertReferencable($field, $instance, $referencable_tests, 'Node handler (admin)');
+  }
+
+  /**
+   * Test the user-specific overrides of the entity handler.
+   */
+  public function testUserHandler() {
+    // Build a fake field instance.
+    $field = array(
+      'translatable' => FALSE,
+      'entity_types' => array(),
+      'settings' => array(
+        'target_type' => 'user',
+      ),
+      'field_name' => 'test_field',
+      'type' => 'entity_reference',
+      'cardinality' => '1',
+    );
+    $instance = array(
+      'settings' => array(
+        'handler' => 'default',
+        'handler_settings' => array(
+          'target_bundles' => array(),
+        ),
+      ),
+    );
+
+    // Build a set of test data.
+    $user_values = array(
+      'anonymous' => user_load(0),
+      'admin' => user_load(1),
+      'non_admin' => array(
+        'name' => 'non_admin <&>',
+        'mail' => 'non_admin@example.com',
+        'roles' => array(),
+        'pass' => user_password(),
+        'status' => 1,
+      ),
+      'blocked' => array(
+        'name' => 'blocked <&>',
+        'mail' => 'blocked@example.com',
+        'roles' => array(),
+        'pass' => user_password(),
+        'status' => 0,
+      ),
+    );
+
+    $user_values['anonymous']->name = config('user.settings')->get('anonymous');
+    $users = array();
+
+    $user_labels = array();
+    foreach ($user_values as $key => $values) {
+      if (is_array($values)) {
+        $account = entity_create('user', $values);
+        $account->save();
+      }
+      else {
+        $account = $values;
+      }
+      $users[$key] = $account;
+      $user_labels[$key] = check_plain($account->name);
+    }
+
+    // Test as a non-admin.
+    $GLOBALS['user'] = $users['non_admin'];
+    $referencable_tests = array(
+      array(
+        'arguments' => array(
+          array(NULL, 'CONTAINS'),
+        ),
+        'result' => array(
+          'user' => array(
+            $users['admin']->uid => $user_labels['admin'],
+            $users['non_admin']->uid => $user_labels['non_admin'],
+          ),
+        ),
+      ),
+      array(
+        'arguments' => array(
+          array('non_admin', 'CONTAINS'),
+          array('NON_ADMIN', 'CONTAINS'),
+        ),
+        'result' => array(
+          'user' => array(
+            $users['non_admin']->uid => $user_labels['non_admin'],
+          ),
+        ),
+      ),
+      array(
+        'arguments' => array(
+          array('invalid user', 'CONTAINS'),
+        ),
+        'result' => array(),
+      ),
+      array(
+        'arguments' => array(
+          array('blocked', 'CONTAINS'),
+        ),
+        'result' => array(),
+      ),
+    );
+    $this->assertReferencable($field, $instance, $referencable_tests, 'User handler');
+
+    $GLOBALS['user'] = $users['admin'];
+    $referencable_tests = array(
+      array(
+        'arguments' => array(
+          array(NULL, 'CONTAINS'),
+        ),
+        'result' => array(
+          'user' => array(
+            $users['anonymous']->uid => $user_labels['anonymous'],
+            $users['admin']->uid => $user_labels['admin'],
+            $users['non_admin']->uid => $user_labels['non_admin'],
+            $users['blocked']->uid => $user_labels['blocked'],
+          ),
+        ),
+      ),
+      array(
+        'arguments' => array(
+          array('blocked', 'CONTAINS'),
+        ),
+        'result' => array(
+          'user' => array(
+            $users['blocked']->uid => $user_labels['blocked'],
+          ),
+        ),
+      ),
+      array(
+        'arguments' => array(
+          array('Anonymous', 'CONTAINS'),
+          array('anonymous', 'CONTAINS'),
+        ),
+        'result' => array(
+          'user' => array(
+            $users['anonymous']->uid => $user_labels['anonymous'],
+          ),
+        ),
+      ),
+    );
+    $this->assertReferencable($field, $instance, $referencable_tests, 'User handler (admin)');
+  }
+
+  /**
+   * Test the comment-specific overrides of the entity handler.
+   */
+  public function testCommentHandler() {
+    // Build a fake field instance.
+    $field = array(
+      'translatable' => FALSE,
+      'entity_types' => array(),
+      'settings' => array(
+        'target_type' => 'comment',
+      ),
+      'field_name' => 'test_field',
+      'type' => 'entity_reference',
+      'cardinality' => '1',
+    );
+    $instance = array(
+      'settings' => array(
+        'handler' => 'default',
+        'handler_settings' => array(
+          'target_bundles' => array(),
+        ),
+      ),
+    );
+
+    // Build a set of test data.
+    $node_values = array(
+      'published' => array(
+        'type' => 'article',
+        'status' => 1,
+        'title' => 'Node published',
+        'uid' => 1,
+      ),
+      'unpublished' => array(
+        'type' => 'article',
+        'status' => 0,
+        'title' => 'Node unpublished',
+        'uid' => 1,
+      ),
+    );
+    $nodes = array();
+    foreach ($node_values as $key => $values) {
+      $node = entity_create('node', $values);
+      $node->save();
+      $nodes[$key] = $node;
+    }
+
+    $comment_values = array(
+      'published_published' => array(
+        'nid' => $nodes['published']->nid,
+        'uid' => 1,
+        'cid' => NULL,
+        'pid' => 0,
+        'status' => COMMENT_PUBLISHED,
+        'subject' => 'Comment Published <&>',
+        'language' => LANGUAGE_NOT_SPECIFIED,
+      ),
+      'published_unpublished' => array(
+        'nid' => $nodes['published']->nid,
+        'uid' => 1,
+        'cid' => NULL,
+        'pid' => 0,
+        'status' => COMMENT_NOT_PUBLISHED,
+        'subject' => 'Comment Unpublished <&>',
+        'language' => LANGUAGE_NOT_SPECIFIED,
+      ),
+      'unpublished_published' => array(
+        'nid' => $nodes['unpublished']->nid,
+        'uid' => 1,
+        'cid' => NULL,
+        'pid' => 0,
+        'status' => COMMENT_NOT_PUBLISHED,
+        'subject' => 'Comment Published on Unpublished node <&>',
+        'language' => LANGUAGE_NOT_SPECIFIED,
+      ),
+    );
+
+    $comments = array();
+    $comment_labels = array();
+    foreach ($comment_values as $key => $values) {
+      $comment = entity_create('comment', $values);
+      $comment->save();
+      $comments[$key] = $comment;
+      $comment_labels[$key] = check_plain($comment->label());
+    }
+
+    // Test as a non-admin.
+    $normal_user = $this->drupalCreateUser(array('access content', 'access comments'));
+    $GLOBALS['user'] = $normal_user;
+    $referencable_tests = array(
+      array(
+        'arguments' => array(
+          array(NULL, 'CONTAINS'),
+        ),
+        'result' => array(
+          'comment_node_article' => array(
+            $comments['published_published']->cid->value => $comment_labels['published_published'],
+          ),
+        ),
+      ),
+      array(
+        'arguments' => array(
+          array('Published', 'CONTAINS'),
+        ),
+        'result' => array(
+          'comment_node_article' => array(
+            $comments['published_published']->cid->value => $comment_labels['published_published'],
+          ),
+        ),
+      ),
+      array(
+        'arguments' => array(
+          array('invalid comment', 'CONTAINS'),
+        ),
+        'result' => array(),
+      ),
+      array(
+        'arguments' => array(
+          array('Comment Unpublished', 'CONTAINS'),
+        ),
+        'result' => array(),
+      ),
+    );
+    $this->assertReferencable($field, $instance, $referencable_tests, 'Comment handler');
+
+    // Test as a comment admin.
+    $admin_user = $this->drupalCreateUser(array('access content', 'access comments', 'administer comments'));
+    $GLOBALS['user'] = $admin_user;
+    $referencable_tests = array(
+      array(
+        'arguments' => array(
+          array(NULL, 'CONTAINS'),
+        ),
+        'result' => array(
+          'comment_node_article' => array(
+            $comments['published_published']->cid->value => $comment_labels['published_published'],
+            $comments['published_unpublished']->cid->value => $comment_labels['published_unpublished'],
+          ),
+        ),
+      ),
+    );
+    $this->assertReferencable($field, $instance, $referencable_tests, 'Comment handler (comment admin)');
+
+    // Test as a node and comment admin.
+    $admin_user = $this->drupalCreateUser(array('access content', 'access comments', 'administer comments', 'bypass node access'));
+    $GLOBALS['user'] = $admin_user;
+    $referencable_tests = array(
+      array(
+        'arguments' => array(
+          array(NULL, 'CONTAINS'),
+        ),
+        'result' => array(
+          'comment_node_article' => array(
+            $comments['published_published']->cid->value => $comment_labels['published_published'],
+            $comments['published_unpublished']->cid->value => $comment_labels['published_unpublished'],
+            $comments['unpublished_published']->cid->value => $comment_labels['unpublished_published'],
+          ),
+        ),
+      ),
+    );
+    $this->assertReferencable($field, $instance, $referencable_tests, 'Comment handler (comment + node admin)');
+  }
+}
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceSelectionSortTest.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceSelectionSortTest.php
new file mode 100644
index 0000000..dedcbe7
--- /dev/null
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/EntityReferenceSelectionSortTest.php
@@ -0,0 +1,150 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\entity_reference\Tests\EntityReferenceSelectionSortTest.
+ */
+
+namespace Drupal\entity_reference\Tests;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests the Entity reference Selection plugin.
+ */
+class EntityReferenceSelectionSortTest extends WebTestBase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Entity reference handlers sort',
+      'description' => 'Test sorting referenced items.',
+      'group' => 'Entity Reference',
+    );
+  }
+
+  public static $modules = array('node', 'entity_reference');
+
+  function setUp() {
+    parent::setUp();
+
+    // Create an Article node type.
+    $this->drupalCreateContentType(array('type' => 'article', 'name' => 'Article'));
+  }
+
+  /**
+   * Assert sorting by field and property.
+   */
+  public function testSort() {
+    // Add text field to entity, to sort by.
+    $field_info = array(
+      'field_name' => 'field_text',
+      'type' => 'text',
+      'entity_types' => array('node'),
+    );
+    field_create_field($field_info);
+
+    $instance_info = array(
+      'label' => 'Text Field',
+      'field_name' => 'field_text',
+      'entity_type' => 'node',
+      'bundle' => 'article',
+      'settings' => array(),
+      'required' => FALSE,
+    );
+    field_create_instance($instance_info);
+
+
+    // Build a fake field instance.
+    $field = array(
+      'translatable' => FALSE,
+      'entity_types' => array(),
+      'settings' => array(
+        'target_type' => 'node',
+      ),
+      'field_name' => 'test_field',
+      'type' => 'entity_reference',
+      'cardinality' => 1,
+    );
+
+    $instance = array(
+      'settings' => array(
+        'handler' => 'default',
+        'handler_settings' => array(
+          'target_bundles' => array(),
+          // Add sorting.
+          'sort' => array(
+            'field' => 'field_text.value',
+            'direction' => 'DESC',
+          ),
+        ),
+      ),
+    );
+
+    // Build a set of test data.
+    $node_values = array(
+      'published1' => array(
+        'type' => 'article',
+        'status' => 1,
+        'title' => 'Node published1 (<&>)',
+        'uid' => 1,
+        'field_text' => array(
+          LANGUAGE_NOT_SPECIFIED => array(
+            array(
+              'value' => 1,
+            ),
+          ),
+        ),
+      ),
+      'published2' => array(
+        'type' => 'article',
+        'status' => 1,
+        'title' => 'Node published2 (<&>)',
+        'uid' => 1,
+        'field_text' => array(
+          LANGUAGE_NOT_SPECIFIED => array(
+            array(
+              'value' => 2,
+            ),
+          ),
+        ),
+      ),
+    );
+
+    $nodes = array();
+    $node_labels = array();
+    foreach ($node_values as $key => $values) {
+      $node = entity_create('node', $values);
+      $node->save();
+      $nodes[$key] = $node;
+      $node_labels[$key] = check_plain($node->label());
+    }
+
+    // Test as a non-admin.
+    $normal_user = $this->drupalCreateUser(array('access content'));
+    $GLOBALS['user'] = $normal_user;
+
+    $handler = entity_reference_get_selection_handler($field, $instance);
+
+    // Not only assert the result, but make sure the keys are sorted as
+    // expected.
+    $result = $handler->getReferencableEntities();
+    $expected_result = array(
+      $nodes['published2']->nid => $node_labels['published2'],
+      $nodes['published1']->nid => $node_labels['published1'],
+    );
+    $this->assertIdentical($result['article'], $expected_result, 'Query sorted by field returned expected values.');
+
+    // Assert sort by property.
+    $instance['settings']['handler_settings']['sort'] = array(
+      'field' => 'nid',
+      'direction' => 'ASC',
+    );
+    $handler = entity_reference_get_selection_handler($field, $instance);
+    $result = $handler->getReferencableEntities();
+    $expected_result = array(
+      $nodes['published1']->nid => $node_labels['published1'],
+      $nodes['published2']->nid => $node_labels['published2'],
+    );
+    $this->assertIdentical($result['article'], $expected_result, 'Query sorted by property returned expected values.');
+  }
+}
diff --git a/core/modules/entity_reference/tests/modules/entity_reference_test/config/views.view.test_entity_reference.yml b/core/modules/entity_reference/tests/modules/entity_reference_test/config/views.view.test_entity_reference.yml
new file mode 100644
index 0000000..ac0fd72
--- /dev/null
+++ b/core/modules/entity_reference/tests/modules/entity_reference_test/config/views.view.test_entity_reference.yml
@@ -0,0 +1,80 @@
+api_version: '3.0'
+base_field: nid
+base_table: node
+core: 8.x
+module: entity_reference_test
+id: test_entity_reference
+description: ''
+human_name: 'Entity reference'
+tag: ''
+disabled: false
+display:
+  default:
+    display_plugin: default
+    id: default
+    display_title: Master
+    position: ''
+    display_options:
+      access:
+        type: perm
+      cache:
+        type: none
+      query:
+        type: views_query
+      exposed_form:
+        type: basic
+      pager:
+        type: full
+      style:
+        type: default
+      row:
+        type: fields
+      fields:
+        title:
+          id: title
+          table: node
+          field: title
+          label: ''
+          alter:
+            alter_text: '0'
+            make_link: '0'
+            absolute: '0'
+            trim: '0'
+            word_boundary: '0'
+            ellipsis: '0'
+            strip_tags: '0'
+            html: '0'
+          hide_empty: '0'
+          empty_zero: '0'
+          link_to_node: '1'
+      filters:
+        status:
+          value: '1'
+          table: node
+          field: status
+          id: status
+          expose:
+            operator: '0'
+          group: '1'
+      sorts:
+        created:
+          id: created
+          table: node
+          field: created
+          order: DESC
+  entity_reference_1:
+    display_plugin: entity_reference
+    id: entity_reference_1
+    display_title: EntityReference
+    position: ''
+    display_options:
+      style:
+        type: entity_reference
+        options:
+          grouping: {  }
+          search_fields:
+            title: title
+      pager:
+        type: none
+        options:
+          offset: '0'
diff --git a/core/modules/entity_reference/tests/modules/entity_reference_test/entity_reference_test.info b/core/modules/entity_reference/tests/modules/entity_reference_test/entity_reference_test.info
new file mode 100644
index 0000000..32b6452
--- /dev/null
+++ b/core/modules/entity_reference/tests/modules/entity_reference_test/entity_reference_test.info
@@ -0,0 +1,7 @@
+name = "Entity reference Test"
+description = "Support module for the Entity reference tests."
+core = 8.x
+dependencies[] = entity_reference
+package = Testing
+version = VERSION
+hidden = TRUE
diff --git a/core/modules/entity_reference/tests/modules/entity_reference_test/entity_reference_test.module b/core/modules/entity_reference/tests/modules/entity_reference_test/entity_reference_test.module
new file mode 100644
index 0000000..6bbe7e9
--- /dev/null
+++ b/core/modules/entity_reference/tests/modules/entity_reference_test/entity_reference_test.module
@@ -0,0 +1,6 @@
+<?php
+
+/**
+ * @file
+ * Helper module for the Entity reference tests.
+ */
diff --git a/core/modules/field/field.api.php b/core/modules/field/field.api.php
index 27304f4..3386eac 100644
--- a/core/modules/field/field.api.php
+++ b/core/modules/field/field.api.php
@@ -1076,7 +1076,7 @@ function hook_field_attach_view_alter(&$output, $context) {
   // Append RDF term mappings on displayed taxonomy links.
   foreach (element_children($output) as $field_name) {
     $element = &$output[$field_name];
-    if ($element['#field_type'] == 'taxonomy_term_reference' && $element['#formatter'] == 'taxonomy_term_reference_link') {
+    if ($element['#field_type'] == 'entity_reference' && $element['#formatter'] == 'entity_reference_label') {
       foreach ($element['#items'] as $delta => $item) {
         $term = $item['taxonomy_term'];
         if (!empty($term->rdf_mapping['rdftype'])) {
diff --git a/core/modules/field_sql_storage/lib/Drupal/field_sql_storage/Entity/Tables.php b/core/modules/field_sql_storage/lib/Drupal/field_sql_storage/Entity/Tables.php
index bf02e2b..c7c9984 100644
--- a/core/modules/field_sql_storage/lib/Drupal/field_sql_storage/Entity/Tables.php
+++ b/core/modules/field_sql_storage/lib/Drupal/field_sql_storage/Entity/Tables.php
@@ -95,7 +95,7 @@ function addField($field, $type, $langcode) {
       // field), a field API field (a configurable field).
       $specifier = $specifiers[$key];
       // First, check for field API fields by trying to retrieve the field specified.
-      // Normally it is a field name, but field_purge_batch() is passing in 
+      // Normally it is a field name, but field_purge_batch() is passing in
       // id:$field_id so check that first.
       if (substr($specifier, 0, 3) == 'id:') {
         $field = field_info_field_by_id(substr($specifier, 3));
@@ -125,9 +125,11 @@ function addField($field, $type, $langcode) {
           // also use the property definitions for column.
           if ($key < $count) {
             $relationship_specifier = $specifiers[$key + 1];
-            $propertyDefinitions = typed_data()
-              ->create(array('type' => $field['type'] . '_field'))
-              ->getPropertyDefinitions();
+
+            // Get the field definitions form a mocked entity.
+            $entity = entity_create($entity_type, array());
+            $propertyDefinitions = $entity->{$field['field_name']}->getPropertyDefinitions();
+
             // If the column is not yet known, ie. the
             // $node->field_image->entity case then use the id source as the
             // column.
diff --git a/core/modules/field_ui/field_ui.admin.inc b/core/modules/field_ui/field_ui.admin.inc
index 6da0f69..a5a0f34 100644
--- a/core/modules/field_ui/field_ui.admin.inc
+++ b/core/modules/field_ui/field_ui.admin.inc
@@ -881,7 +881,7 @@ function field_ui_field_edit_form($form, &$form_state, $instance) {
   );
 
   // Add additional field instance settings from the field module.
-  $additions = module_invoke($field['module'], 'field_instance_settings_form', $field, $instance);
+  $additions = module_invoke($field['module'], 'field_instance_settings_form', $field, $instance, $form_state);
   if (is_array($additions)) {
     $form['instance']['settings'] = $additions;
     $form['instance']['settings']['#weight'] = 10;
diff --git a/core/modules/field_ui/field_ui.api.php b/core/modules/field_ui/field_ui.api.php
index cb55362..eb72e04 100644
--- a/core/modules/field_ui/field_ui.api.php
+++ b/core/modules/field_ui/field_ui.api.php
@@ -58,11 +58,13 @@ function hook_field_settings_form($field, $instance, $has_data) {
  *   The field structure being configured.
  * @param $instance
  *   The instance structure being configured.
+ * @param array $form_state
+  *   The form state of the (entire) configuration form.
  *
  * @return
  *   The form definition for the field instance settings.
  */
-function hook_field_instance_settings_form($field, $instance) {
+function hook_field_instance_settings_form($field, $instance, $form_state) {
   $settings = $instance['settings'];
 
   $form['text_processing'] = array(
diff --git a/core/modules/file/lib/Drupal/file/Plugin/entity_reference/selection/FileSelection.php b/core/modules/file/lib/Drupal/file/Plugin/entity_reference/selection/FileSelection.php
new file mode 100644
index 0000000..d4aa678
--- /dev/null
+++ b/core/modules/file/lib/Drupal/file/Plugin/entity_reference/selection/FileSelection.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * @file
+ * Contains Drupal\file\Plugin\Type\selection\FileSelection.
+ */
+
+namespace Drupal\file\Plugin\entity_reference\selection;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\Core\Database\Query\SelectInterface;
+use Drupal\entity_reference\Plugin\entity_reference\selection\SelectionBase;
+
+/**
+ * Provides specific access control for the file entity type.
+ *
+ * @Plugin(
+ *   id = "file_default",
+ *   module = "file",
+ *   label = @Translation("File selection"),
+ *   entity_types = {"file"},
+ *   group = "default",
+ *   weight = 1
+ * )
+ */
+class FileSelection extends SelectionBase {
+
+  /**
+   * Overrides SelectionBase::buildEntityQuery().
+   */
+  public function buildEntityQuery($match = NULL, $match_operator = 'CONTAINS') {
+    $query = parent::buildEntityQuery($match, $match_operator);
+    $query->condition('status', FILE_STATUS_PERMANENT);
+  }
+}
diff --git a/core/modules/forum/forum.module b/core/modules/forum/forum.module
index e9cd043..5bf164d 100644
--- a/core/modules/forum/forum.module
+++ b/core/modules/forum/forum.module
@@ -484,7 +484,7 @@ function forum_taxonomy_term_delete(Term $term) {
  * comment_save() calls hook_comment_publish() for all published comments.
  */
 function forum_comment_publish($comment) {
-  _forum_update_forum_index($comment->nid->value);
+  _forum_update_forum_index($comment->nid->target_id);
 }
 
 /**
@@ -497,7 +497,7 @@ function forum_comment_update($comment) {
   // comment_save() calls hook_comment_publish() for all published comments,
   // so we need to handle all other values here.
   if (!$comment->status->value) {
-    _forum_update_forum_index($comment->nid->value);
+    _forum_update_forum_index($comment->nid->target_id);
   }
 }
 
@@ -505,14 +505,14 @@ function forum_comment_update($comment) {
  * Implements hook_comment_unpublish().
  */
 function forum_comment_unpublish($comment) {
-  _forum_update_forum_index($comment->nid->value);
+  _forum_update_forum_index($comment->nid->target_id);
 }
 
 /**
  * Implements hook_comment_delete().
  */
 function forum_comment_delete($comment) {
-  _forum_update_forum_index($comment->nid->value);
+  _forum_update_forum_index($comment->nid->target_id);
 }
 
 /**
diff --git a/core/modules/node/lib/Drupal/node/Plugin/entity_reference/selection/NodeSelection.php b/core/modules/node/lib/Drupal/node/Plugin/entity_reference/selection/NodeSelection.php
new file mode 100644
index 0000000..bb252df
--- /dev/null
+++ b/core/modules/node/lib/Drupal/node/Plugin/entity_reference/selection/NodeSelection.php
@@ -0,0 +1,44 @@
+<?php
+
+/**
+ * @file
+ * Contains Drupal\node\Plugin\Type\selection\NodeSelection.
+ */
+
+namespace Drupal\node\Plugin\entity_reference\selection;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\Core\Database\Query\SelectInterface;
+use Drupal\entity_reference\Plugin\entity_reference\selection\SelectionBase;
+
+/**
+ * Provides specific access control for the node entity type.
+ *
+ * @Plugin(
+ *   id = "node_default",
+ *   module = "node",
+ *   label = @Translation("Node selection"),
+ *   entity_types = {"node"},
+ *   group = "default",
+ *   weight = 1
+ * )
+ */
+class NodeSelection extends SelectionBase {
+
+  /**
+   * Overrides SelectionBase::buildEntityQuery().
+   */
+  public function buildEntityQuery($match = NULL, $match_operator = 'CONTAINS') {
+    $query = parent::buildEntityQuery($match, $match_operator);
+    // Adding the 'node_access' tag is sadly insufficient for nodes: core
+    // requires us to also know about the concept of 'published' and
+    // 'unpublished'. We need to do that as long as there are no access control
+    // modules in use on the site. As long as one access control module is there,
+    // it is supposed to handle this check.
+    if (!user_access('bypass node access') && !count(module_implements('node_grants'))) {
+      $query->condition('status', NODE_PUBLISHED);
+    }
+    return $query;
+  }
+}
diff --git a/core/modules/options/options.module b/core/modules/options/options.module
index c63f364..f1639ca 100644
--- a/core/modules/options/options.module
+++ b/core/modules/options/options.module
@@ -444,14 +444,14 @@ function options_field_widget_info() {
   return array(
     'options_select' => array(
       'label' => t('Select list'),
-      'field types' => array('list_integer', 'list_float', 'list_text'),
+      'field types' => array('list_integer', 'list_float', 'list_text', 'entity_reference'),
       'behaviors' => array(
         'multiple values' => FIELD_BEHAVIOR_CUSTOM,
       ),
     ),
     'options_buttons' => array(
       'label' => t('Check boxes/radio buttons'),
-      'field types' => array('list_integer', 'list_float', 'list_text', 'list_boolean'),
+      'field types' => array('list_integer', 'list_float', 'list_text', 'list_boolean', 'entity_reference'),
       'behaviors' => array(
         'multiple values' => FIELD_BEHAVIOR_CUSTOM,
       ),
diff --git a/core/modules/rdf/rdf.module b/core/modules/rdf/rdf.module
index cff64e5..af7d157 100644
--- a/core/modules/rdf/rdf.module
+++ b/core/modules/rdf/rdf.module
@@ -419,9 +419,9 @@ function rdf_comment_load($comments) {
     // isn't needed until rdf_preprocess_comment() is called, but set it here
     // to optimize performance for websites that implement an entity cache.
     $comment->rdf_data['date'] = rdf_rdfa_attributes($comment->rdf_mapping['created'], $comment->created->value);
-    $comment->rdf_data['nid_uri'] = url('node/' . $comment->nid->value);
-    if ($comment->pid->value) {
-      $comment->rdf_data['pid_uri'] = url('comment/' . $comment->pid->value, array('fragment' => 'comment-' . $comment->pid->value));
+    $comment->rdf_data['nid_uri'] = url('node/' . $comment->nid->target_id);
+    if ($comment->pid->target_id) {
+      $comment->rdf_data['pid_uri'] = url('comment/' . $comment->pid->target_id, array('fragment' => 'comment-' . $comment->pid->target_id));
     }
   }
 }
@@ -748,7 +748,7 @@ function rdf_preprocess_comment(&$variables) {
     $variables['rdf_metadata_attributes'][] = $parent_node_attributes;
 
     // Adds the relation to parent comment, if it exists.
-    if ($comment->pid->value != 0) {
+    if ($comment->pid->target_id != 0) {
       $parent_comment_attributes['rel'] = $comment->rdf_mapping['pid']['predicates'];
       // The parent comment URI is precomputed as part of the rdf_data so that
       // it can be cached as part of the entity.
diff --git a/core/modules/search/search.module b/core/modules/search/search.module
index a465e3a..5c67997 100644
--- a/core/modules/search/search.module
+++ b/core/modules/search/search.module
@@ -810,7 +810,7 @@ function search_node_update(Node $node) {
  */
 function search_comment_insert($comment) {
   // Reindex the node when comments are added.
-  search_touch_node($comment->nid->value);
+  search_touch_node($comment->nid->target_id);
 }
 
 /**
@@ -818,7 +818,7 @@ function search_comment_insert($comment) {
  */
 function search_comment_update($comment) {
   // Reindex the node when comments are changed.
-  search_touch_node($comment->nid->value);
+  search_touch_node($comment->nid->target_id);
 }
 
 /**
@@ -826,7 +826,7 @@ function search_comment_update($comment) {
  */
 function search_comment_delete($comment) {
   // Reindex the node when comments are deleted.
-  search_touch_node($comment->nid->value);
+  search_touch_node($comment->nid->target_id);
 }
 
 /**
@@ -834,7 +834,7 @@ function search_comment_delete($comment) {
  */
 function search_comment_publish($comment) {
   // Reindex the node when comments are published.
-  search_touch_node($comment->nid->value);
+  search_touch_node($comment->nid->target_id);
 }
 
 /**
@@ -842,7 +842,7 @@ function search_comment_publish($comment) {
  */
 function search_comment_unpublish($comment) {
   // Reindex the node when comments are unpublished.
-  search_touch_node($comment->nid->value);
+  search_touch_node($comment->nid->target_id);
 }
 
 /**
diff --git a/core/modules/system/lib/Drupal/system/Tests/Entity/EntityFieldTest.php b/core/modules/system/lib/Drupal/system/Tests/Entity/EntityFieldTest.php
index f01d440..2a98ffa 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Entity/EntityFieldTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Entity/EntityFieldTest.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Entity\Tests\EntityFieldTest.
+ * Definition of Drupal\system\Tests\Entity\EntityFieldTest.
  */
 
 namespace Drupal\system\Tests\Entity;
@@ -46,7 +46,7 @@ protected function createTestEntity($entity_type) {
     // Pass in the value of the name field when creating. With the user
     // field we test setting a field after creation.
     $entity = entity_create($entity_type, array());
-    $entity->user_id->value = $this->entity_user->uid;
+    $entity->user_id->target_id = $this->entity_user->uid;
     $entity->name->value = $this->entity_name;
 
     // Set a value for the test field.
@@ -96,26 +96,26 @@ protected function assertReadWrite($entity_type) {
     $this->assertTrue($entity->user_id instanceof FieldInterface, format_string('%entity_type: Field implements interface', array('%entity_type' => $entity_type)));
     $this->assertTrue($entity->user_id[0] instanceof FieldItemInterface, format_string('%entity_type: Field item implements interface', array('%entity_type' => $entity_type)));
 
-    $this->assertEqual($this->entity_user->uid, $entity->user_id->value, format_string('%entity_type: User id can be read.', array('%entity_type' => $entity_type)));
+    $this->assertEqual($this->entity_user->uid, $entity->user_id->target_id, format_string('%entity_type: User id can be read.', array('%entity_type' => $entity_type)));
     $this->assertEqual($this->entity_user->name, $entity->user_id->entity->name, format_string('%entity_type: User name can be read.', array('%entity_type' => $entity_type)));
 
     // Change the assigned user by entity.
     $new_user = $this->drupalCreateUser();
     $entity->user_id->entity = $new_user;
-    $this->assertEqual($new_user->uid, $entity->user_id->value, format_string('%entity_type: Updated user id can be read.', array('%entity_type' => $entity_type)));
+    $this->assertEqual($new_user->uid, $entity->user_id->target_id, format_string('%entity_type: Updated user id can be read.', array('%entity_type' => $entity_type)));
     $this->assertEqual($new_user->name, $entity->user_id->entity->name, format_string('%entity_type: Updated user name value can be read.', array('%entity_type' => $entity_type)));
 
     // Change the assigned user by id.
     $new_user = $this->drupalCreateUser();
-    $entity->user_id->value = $new_user->uid;
-    $this->assertEqual($new_user->uid, $entity->user_id->value, format_string('%entity_type: Updated user id can be read.', array('%entity_type' => $entity_type)));
+    $entity->user_id->target_id = $new_user->uid;
+    $this->assertEqual($new_user->uid, $entity->user_id->target_id, format_string('%entity_type: Updated user id can be read.', array('%entity_type' => $entity_type)));
     $this->assertEqual($new_user->name, $entity->user_id->entity->name, format_string('%entity_type: Updated user name value can be read.', array('%entity_type' => $entity_type)));
 
     // Try unsetting a field.
     $entity->name->value = NULL;
-    $entity->user_id->value = NULL;
+    $entity->user_id->target_id = NULL;
     $this->assertNull($entity->name->value, format_string('%entity_type: Name field is not set.', array('%entity_type' => $entity_type)));
-    $this->assertNull($entity->user_id->value, format_string('%entity_type: User ID field is not set.', array('%entity_type' => $entity_type)));
+    $this->assertNull($entity->user_id->target_id, format_string('%entity_type: User ID field is not set.', array('%entity_type' => $entity_type)));
     $this->assertNull($entity->user_id->entity, format_string('%entity_type: User entity field is not set.', array('%entity_type' => $entity_type)));
 
     // Test using isset(), empty() and unset().
@@ -186,7 +186,7 @@ protected function assertReadWrite($entity_type) {
     $this->entity_name = $this->randomName();
     $name_item[0]['value'] = $this->entity_name;
     $this->entity_user = $this->drupalCreateUser();
-    $user_item[0]['value'] = $this->entity_user->uid;
+    $user_item[0]['target_id'] = $this->entity_user->uid;
     $this->entity_field_text = $this->randomName();
     $text_item[0]['value'] = $this->entity_field_text;
 
@@ -196,7 +196,7 @@ protected function assertReadWrite($entity_type) {
       'field_test_text' => $text_item,
     ));
     $this->assertEqual($this->entity_name, $entity->name->value, format_string('%entity_type: Name value can be read.', array('%entity_type' => $entity_type)));
-    $this->assertEqual($this->entity_user->uid, $entity->user_id->value, format_string('%entity_type: User id can be read.', array('%entity_type' => $entity_type)));
+    $this->assertEqual($this->entity_user->uid, $entity->user_id->target_id, format_string('%entity_type: User id can be read.', array('%entity_type' => $entity_type)));
     $this->assertEqual($this->entity_user->name, $entity->user_id->entity->name, format_string('%entity_type: User name can be read.', array('%entity_type' => $entity_type)));
     $this->assertEqual($this->entity_field_text, $entity->field_test_text->value, format_string('%entity_type: Text field can be read.', array('%entity_type' => $entity_type)));
 
@@ -208,7 +208,7 @@ protected function assertReadWrite($entity_type) {
 
     $this->assertTrue($entity->name !== $entity2->name, format_string('%entity_type: Copying properties results in a different field object.', array('%entity_type' => $entity_type)));
     $this->assertEqual($entity->name->value, $entity2->name->value, format_string('%entity_type: Name field copied.', array('%entity_type' => $entity_type)));
-    $this->assertEqual($entity->user_id->value, $entity2->user_id->value, format_string('%entity_type: User id field copied.', array('%entity_type' => $entity_type)));
+    $this->assertEqual($entity->user_id->target_id, $entity2->user_id->target_id, format_string('%entity_type: User id field copied.', array('%entity_type' => $entity_type)));
     $this->assertEqual($entity->field_test_text->value, $entity2->field_test_text->value, format_string('%entity_type: Text field copied.', array('%entity_type' => $entity_type)));
 
     // Tests adding a value to a field item list.
@@ -259,14 +259,14 @@ protected function assertReadWrite($entity_type) {
     $this->assertEqual($entity->name->value, 'foo', format_string('%entity_type: Field value has been set via setPropertyValue() on an entity.', array('%entity_type' => $entity_type)));
 
     // Make sure the user id can be set to zero.
-    $user_item[0]['value'] = 0;
+    $user_item[0]['target_id'] = 0;
     $entity = entity_create($entity_type, array(
       'name' => $name_item,
       'user_id' => $user_item,
       'field_test_text' => $text_item,
     ));
-    $this->assertNotNull($entity->user_id->value, format_string('%entity_type: User id is not NULL', array('%entity_type' => $entity_type)));
-    $this->assertIdentical($entity->user_id->value, 0, format_string('%entity_type: User id has been set to 0', array('%entity_type' => $entity_type)));
+    $this->assertNotNull($entity->user_id->target_id, format_string('%entity_type: User id is not NULL', array('%entity_type' => $entity_type)));
+    $this->assertIdentical($entity->user_id->target_id, 0, format_string('%entity_type: User id has been set to 0', array('%entity_type' => $entity_type)));
 
     // Test setting the ID with the value only.
     $entity = entity_create($entity_type, array(
@@ -274,8 +274,8 @@ protected function assertReadWrite($entity_type) {
       'user_id' => 0,
       'field_test_text' => $text_item,
     ));
-    $this->assertNotNull($entity->user_id->value, format_string('%entity_type: User id is not NULL', array('%entity_type' => $entity_type)));
-    $this->assertIdentical($entity->user_id->value, 0, format_string('%entity_type: User id has been set to 0', array('%entity_type' => $entity_type)));
+    $this->assertNotNull($entity->user_id->target_id, format_string('%entity_type: User id is not NULL', array('%entity_type' => $entity_type)));
+    $this->assertIdentical($entity->user_id->target_id, 0, format_string('%entity_type: User id has been set to 0', array('%entity_type' => $entity_type)));
   }
 
   /**
@@ -307,7 +307,7 @@ protected function assertSave($entity_type) {
     $this->assertTrue(is_string($entity->uuid->value), format_string('%entity_type: UUID value can be read.', array('%entity_type' => $entity_type)));
     $this->assertEqual(LANGUAGE_NOT_SPECIFIED, $entity->langcode->value, format_string('%entity_type: Language code can be read.', array('%entity_type' => $entity_type)));
     $this->assertEqual(language_load(LANGUAGE_NOT_SPECIFIED), $entity->langcode->language, format_string('%entity_type: Language object can be read.', array('%entity_type' => $entity_type)));
-    $this->assertEqual($this->entity_user->uid, $entity->user_id->value, format_string('%entity_type: User id can be read.', array('%entity_type' => $entity_type)));
+    $this->assertEqual($this->entity_user->uid, $entity->user_id->target_id, format_string('%entity_type: User id can be read.', array('%entity_type' => $entity_type)));
     $this->assertEqual($this->entity_user->name, $entity->user_id->entity->name, format_string('%entity_type: User name can be read.', array('%entity_type' => $entity_type)));
     $this->assertEqual($this->entity_field_text, $entity->field_test_text->value, format_string('%entity_type: Text field can be read.', array('%entity_type' => $entity_type)));
   }
@@ -340,7 +340,7 @@ protected function assertIntrospection($entity_type) {
     $wrapped_entity = typed_data()->create($definition);
     $definitions = $wrapped_entity->getPropertyDefinitions($definition);
     $this->assertEqual($definitions['name']['type'], 'string_field', $entity_type .': Name field found.');
-    $this->assertEqual($definitions['user_id']['type'], 'entityreference_field', $entity_type .': User field found.');
+    $this->assertEqual($definitions['user_id']['type'], 'entity_reference_field', $entity_type .': User field found.');
     $this->assertEqual($definitions['field_test_text']['type'], 'text_field', $entity_type .': Test-text-field field found.');
 
     // Test introspecting an entity object.
@@ -349,14 +349,14 @@ protected function assertIntrospection($entity_type) {
 
     $definitions = $entity->getPropertyDefinitions();
     $this->assertEqual($definitions['name']['type'], 'string_field', $entity_type .': Name field found.');
-    $this->assertEqual($definitions['user_id']['type'], 'entityreference_field', $entity_type .': User field found.');
+    $this->assertEqual($definitions['user_id']['type'], 'entity_reference_field', $entity_type .': User field found.');
     $this->assertEqual($definitions['field_test_text']['type'], 'text_field', $entity_type .': Test-text-field field found.');
 
     $name_properties = $entity->name->getPropertyDefinitions();
     $this->assertEqual($name_properties['value']['type'], 'string', $entity_type .': String value property of the name found.');
 
     $userref_properties = $entity->user_id->getPropertyDefinitions();
-    $this->assertEqual($userref_properties['value']['type'], 'integer', $entity_type .': Entity id property of the user found.');
+    $this->assertEqual($userref_properties['target_id']['type'], 'integer', $entity_type .': Entity id property of the user found.');
     $this->assertEqual($userref_properties['entity']['type'], 'entity', $entity_type .': Entity reference property of the user found.');
 
     $textfield_properties = $entity->field_test_text->getPropertyDefinitions();
diff --git a/core/modules/system/lib/Drupal/system/Tests/Entity/EntityQueryRelationshipTest.php b/core/modules/system/lib/Drupal/system/Tests/Entity/EntityQueryRelationshipTest.php
index 4ca53c1..8d5fa81 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Entity/EntityQueryRelationshipTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Entity/EntityQueryRelationshipTest.php
@@ -109,7 +109,7 @@ protected function setUp() {
       $entity = entity_create('entity_test', array());
       $entity->name->value = $this->randomName();
       $index = $i ? 1 : 0;
-      $entity->user_id->value = $this->accounts[$index]->uid;
+      $entity->user_id->target_id = $this->accounts[$index]->uid;
       $entity->{$this->fieldName}->tid = $this->terms[$index]->tid;
       $entity->save();
       $this->entities[] = $entity;
diff --git a/core/modules/system/lib/Drupal/system/Tests/Entity/EntityTranslationTest.php b/core/modules/system/lib/Drupal/system/Tests/Entity/EntityTranslationTest.php
index b658cd9..e5f79c9 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Entity/EntityTranslationTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Entity/EntityTranslationTest.php
@@ -215,13 +215,13 @@ protected function assertMultilingualProperties($entity_type) {
     $entity = entity_load($entity_type, $entity->id());
     $this->assertEqual($entity->language()->langcode, LANGUAGE_NOT_SPECIFIED, format_string('%entity_type: Entity created as language neutral.', array('%entity_type' => $entity_type)));
     $this->assertEqual($name, $entity->getTranslation(LANGUAGE_DEFAULT)->get('name')->value, format_string('%entity_type: The entity name has been correctly stored as language neutral.', array('%entity_type' => $entity_type)));
-    $this->assertEqual($uid, $entity->getTranslation(LANGUAGE_DEFAULT)->get('user_id')->value, format_string('%entity_type: The entity author has been correctly stored as language neutral.', array('%entity_type' => $entity_type)));
+    $this->assertEqual($uid, $entity->getTranslation(LANGUAGE_DEFAULT)->get('user_id')->target_id, format_string('%entity_type: The entity author has been correctly stored as language neutral.', array('%entity_type' => $entity_type)));
     // As fields, translatable properties should ignore the given langcode and
     // use neutral language if the entity is not translatable.
     $this->assertEqual($name, $entity->getTranslation($langcode)->get('name')->value, format_string('%entity_type: The entity name defaults to neutral language.', array('%entity_type' => $entity_type)));
-    $this->assertEqual($uid, $entity->getTranslation($langcode)->get('user_id')->value, format_string('%entity_type: The entity author defaults to neutral language.', array('%entity_type' => $entity_type)));
+    $this->assertEqual($uid, $entity->getTranslation($langcode)->get('user_id')->target_id, format_string('%entity_type: The entity author defaults to neutral language.', array('%entity_type' => $entity_type)));
     $this->assertEqual($name, $entity->get('name')->value, format_string('%entity_type: The entity name can be retrieved without specifying a language.', array('%entity_type' => $entity_type)));
-    $this->assertEqual($uid, $entity->get('user_id')->value, format_string('%entity_type: The entity author can be retrieved without specifying a language.', array('%entity_type' => $entity_type)));
+    $this->assertEqual($uid, $entity->get('user_id')->target_id, format_string('%entity_type: The entity author can be retrieved without specifying a language.', array('%entity_type' => $entity_type)));
 
     // Create a language-aware entity and check that properties are stored
     // as language-aware.
@@ -230,13 +230,13 @@ protected function assertMultilingualProperties($entity_type) {
     $entity = entity_load($entity_type, $entity->id());
     $this->assertEqual($entity->language()->langcode, $langcode, format_string('%entity_type: Entity created as language specific.', array('%entity_type' => $entity_type)));
     $this->assertEqual($name, $entity->getTranslation($langcode)->get('name')->value, format_string('%entity_type: The entity name has been correctly stored as a language-aware property.', array('%entity_type' => $entity_type)));
-    $this->assertEqual($uid, $entity->getTranslation($langcode)->get('user_id')->value, format_string('%entity_type: The entity author has been correctly stored as a language-aware property.', array('%entity_type' => $entity_type)));
+    $this->assertEqual($uid, $entity->getTranslation($langcode)->get('user_id')->target_id, format_string('%entity_type: The entity author has been correctly stored as a language-aware property.', array('%entity_type' => $entity_type)));
     // Translatable properties on a translatable entity should use default
     // language if LANGUAGE_NOT_SPECIFIED is passed.
     $this->assertEqual($name, $entity->getTranslation(LANGUAGE_NOT_SPECIFIED)->get('name')->value, format_string('%entity_type: The entity name defaults to the default language.', array('%entity_type' => $entity_type)));
-    $this->assertEqual($uid, $entity->getTranslation(LANGUAGE_NOT_SPECIFIED)->get('user_id')->value, format_string('%entity_type: The entity author defaults to the default language.', array('%entity_type' => $entity_type)));
+    $this->assertEqual($uid, $entity->getTranslation(LANGUAGE_NOT_SPECIFIED)->get('user_id')->target_id, format_string('%entity_type: The entity author defaults to the default language.', array('%entity_type' => $entity_type)));
     $this->assertEqual($name, $entity->get('name')->value, format_string('%entity_type: The entity name can be retrieved without specifying a language.', array('%entity_type' => $entity_type)));
-    $this->assertEqual($uid, $entity->get('user_id')->value, format_string('%entity_type: The entity author can be retrieved without specifying a language.', array('%entity_type' => $entity_type)));
+    $this->assertEqual($uid, $entity->get('user_id')->target_id, format_string('%entity_type: The entity author can be retrieved without specifying a language.', array('%entity_type' => $entity_type)));
 
     // Create property translations.
     $properties = array();
@@ -266,7 +266,7 @@ protected function assertMultilingualProperties($entity_type) {
         '%langcode' => $langcode,
       );
       $this->assertEqual($properties[$langcode]['name'][0], $entity->getTranslation($langcode)->get('name')->value, format_string('%entity_type: The entity name has been correctly stored for language %langcode.', $args));
-      $this->assertEqual($properties[$langcode]['user_id'][0], $entity->getTranslation($langcode)->get('user_id')->value, format_string('%entity_type: The entity author has been correctly stored for language %langcode.', $args));
+      $this->assertEqual($properties[$langcode]['user_id'][0], $entity->getTranslation($langcode)->get('user_id')->target_id, format_string('%entity_type: The entity author has been correctly stored for language %langcode.', $args));
     }
 
     // Test query conditions (cache is reset at each call).
diff --git a/core/modules/system/lib/Drupal/system/Tests/Entity/EntityUUIDTest.php b/core/modules/system/lib/Drupal/system/Tests/Entity/EntityUUIDTest.php
index 15220cb..a4e2d4e 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Entity/EntityUUIDTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Entity/EntityUUIDTest.php
@@ -94,7 +94,7 @@ protected function assertCRUD($entity_type) {
           $this->assertNotEqual($entity_duplicate->id(), $entity->id());
           break;
         default:
-          $this->assertEqual($entity_duplicate->{$property}->value, $entity->{$property}->value);
+          $this->assertEqual($entity_duplicate->{$property}->getValue(), $entity->{$property}->getValue());
       }
     }
     $entity_duplicate->save();
diff --git a/core/modules/system/lib/Drupal/system/Tests/Serialization/EntitySerializationTest.php b/core/modules/system/lib/Drupal/system/Tests/Serialization/EntitySerializationTest.php
index ea3c960..5855e91 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Serialization/EntitySerializationTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Serialization/EntitySerializationTest.php
@@ -90,7 +90,7 @@ public function testNormalize() {
         array('value' => $this->values['name']),
       ),
       'user_id' => array(
-        array('value' => $this->values['user_id']),
+        array('target_id' => $this->values['user_id']),
       ),
       'field_test_text' => array(
         array(
diff --git a/core/modules/system/system.module b/core/modules/system/system.module
index 336f84b..c7f6395 100644
--- a/core/modules/system/system.module
+++ b/core/modules/system/system.module
@@ -2275,7 +2275,7 @@ function system_data_type_info() {
       'class' => '\Drupal\Core\Entity\Field\Type\LanguageItem',
       'list class' => '\Drupal\Core\Entity\Field\Type\Field',
     ),
-    'entityreference_field' => array(
+    'entity_reference_field' => array(
       'label' => t('Entity reference field item'),
       'description' => t('An entity field containing an entity reference.'),
       'class' => '\Drupal\Core\Entity\Field\Type\EntityReferenceItem',
diff --git a/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestFormController.php b/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestFormController.php
index e1892a0..c08e3b3 100644
--- a/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestFormController.php
+++ b/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestFormController.php
@@ -36,7 +36,7 @@ public function form(array $form, array &$form_state, EntityInterface $entity) {
     $form['user_id'] = array(
       '#type' => 'textfield',
       '#title' => 'UID',
-      '#default_value' => $translation->user_id->value,
+      '#default_value' => $translation->user_id->target_id,
       '#size' => 60,
       '#maxlength' => 128,
       '#required' => TRUE,
diff --git a/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestMulStorageController.php b/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestMulStorageController.php
index 28a90ee..786e91a 100644
--- a/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestMulStorageController.php
+++ b/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestMulStorageController.php
@@ -25,7 +25,7 @@ public function baseFieldDefinitions() {
     $fields = parent::baseFieldDefinitions();
     $fields['default_langcode'] = array(
       'label' => t('Default language'),
-      'description' => t('Flag to inditcate whether this is the default language.'),
+      'description' => t('Flag to indicate whether this is the default language.'),
       'type' => 'boolean_field',
     );
     return $fields;
diff --git a/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestStorageController.php b/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestStorageController.php
index 0908700..500a41c 100644
--- a/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestStorageController.php
+++ b/core/modules/system/tests/modules/entity_test/lib/Drupal/entity_test/EntityTestStorageController.php
@@ -46,8 +46,8 @@ public function baseFieldDefinitions() {
     $fields['user_id'] = array(
       'label' => t('User ID'),
       'description' => t('The ID of the associated user.'),
-      'type' => 'entityreference_field',
-      'settings' => array('entity type' => 'user'),
+      'type' => 'entity_reference_field',
+      'settings' => array('target_type' => 'user'),
       'translatable' => TRUE,
     );
     return $fields;
diff --git a/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/entity_reference/selection/TermSelection.php b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/entity_reference/selection/TermSelection.php
new file mode 100644
index 0000000..cb6bb5f
--- /dev/null
+++ b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/entity_reference/selection/TermSelection.php
@@ -0,0 +1,61 @@
+<?php
+
+/**
+ * @file
+ * Contains Drupal\taxonomy\Plugin\entity_reference\selection\TermSelection.
+ */
+
+namespace Drupal\taxonomy\Plugin\entity_reference\selection;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\Core\Database\Query\SelectInterface;
+use Drupal\entity_reference\Plugin\entity_reference\selection\SelectionBase;
+
+/**
+ * Provides specific access control for the taxonomy_term entity type.
+ *
+ * @Plugin(
+ *   id = "taxonomy_term_default",
+ *   module = "taxonomy",
+ *   label = @Translation("Taxonomy Term selection"),
+ *   entity_types = {"taxonomy_term"},
+ *   group = "default",
+ *   weight = 1
+ * )
+ */
+class TermSelection extends SelectionBase {
+
+  /**
+   * Overrides SelectionBase::entityQueryAlter().
+   */
+  public function entityQueryAlter(SelectInterface $query) {
+    // @todo: How to set access, as vocabulary is now config?
+  }
+
+  /**
+   * Overrides SelectionBase::getReferencableEntities().
+   */
+  public function getReferencableEntities($match = NULL, $match_operator = 'CONTAINS', $limit = 0) {
+    if ($match || $limit) {
+      return parent::getReferencableEntities($match , $match_operator, $limit);
+    }
+
+    $options = array();
+
+    $entity_info = entity_get_info('taxonomy_term');
+    $bundles = !empty($this->instance['settings']['handler_settings']['target_bundles']) ? $this->instance['settings']['handler_settings']['target_bundles'] : array_keys($entity_info['bundles']);
+
+    foreach ($bundles as $bundle) {
+      if ($vocabulary = entity_load('taxonomy_vocabulary',$bundle)) {
+        if ($terms = taxonomy_get_tree($vocabulary->id(), 0)) {
+          foreach ($terms as $term) {
+            $options[$vocabulary->id()][$term->tid] = str_repeat('-', $term->depth) . check_plain($term->name);
+          }
+        }
+      }
+    }
+
+    return $options;
+  }
+}
diff --git a/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/field/formatter/EntityReferenceTaxonomyTermRssFormatter.php b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/field/formatter/EntityReferenceTaxonomyTermRssFormatter.php
new file mode 100644
index 0000000..c528985
--- /dev/null
+++ b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/field/formatter/EntityReferenceTaxonomyTermRssFormatter.php
@@ -0,0 +1,50 @@
+<?php
+
+/**
+ * @file
+ * Contains Drupal\taxonomy\Plugin\field\formatter\EntityReferenceTaxonomyTermRssFormatter.
+ */
+
+namespace Drupal\taxonomy\Plugin\field\formatter;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\entity_reference\Plugin\field\formatter\EntityReferenceFormatterBase;
+
+/**
+ * Plugin implementation of the 'entity-reference taxonomy term RSS' formatter.
+ *
+ * @todo: Have a way to indicate this formatter applies only to taxonomy terms.
+ *
+ * @Plugin(
+ *   id = "entity_reference_rss_category",
+ *   module = "taxonomy",
+ *   label = @Translation("RSS category"),
+ *   description = @Translation("Display reference to taxonomy term in RSS."),
+ *   field_types = {
+ *     "entity_reference"
+ *   }
+ * )
+ */
+class EntityReferenceTaxonomyTermRssFormatter extends EntityReferenceFormatterBase {
+
+  /**
+   * Overrides Drupal\entity_reference\Plugin\field\formatter\EntityReferenceFormatterBase::viewElements().
+   */
+  public function viewElements(EntityInterface $entity, $langcode, array $items) {
+    $elements = array();
+
+    foreach ($items as $delta => $item) {
+      $entity->rss_elements[] = array(
+        'key' => 'category',
+        'value' => $item['target_id'] != 'autocreate' ? $item['entity']->label() : $item['label'],
+        'attributes' => array(
+          'domain' => $item['target_id'] != 'autocreate' ? url('taxonomy/term/' . $item['target_id'], array('absolute' => TRUE)) : '',
+        ),
+      );
+    }
+
+    return $elements;
+  }
+}
diff --git a/core/modules/tracker/tracker.module b/core/modules/tracker/tracker.module
index d33a878..0eaa7d8 100644
--- a/core/modules/tracker/tracker.module
+++ b/core/modules/tracker/tracker.module
@@ -230,7 +230,7 @@ function tracker_comment_update($comment) {
   // comment_save() calls hook_comment_publish() for all published comments
   // so we need to handle all other values here.
   if ($comment->status->value != COMMENT_PUBLISHED) {
-    _tracker_remove($comment->nid->value, $comment->uid->value, $comment->changed->value);
+    _tracker_remove($comment->nid->target_id, $comment->uid->target_id, $comment->changed->value);
   }
 }
 
@@ -241,21 +241,21 @@ function tracker_comment_update($comment) {
  * comment_save() calls hook_comment_publish() for all published comments.
  */
 function tracker_comment_publish($comment) {
-  _tracker_add($comment->nid->value, $comment->uid->value, $comment->changed->value);
+  _tracker_add($comment->nid->target_id, $comment->uid->target_id, $comment->changed->value);
 }
 
 /**
  * Implements hook_comment_unpublish().
  */
 function tracker_comment_unpublish($comment) {
-  _tracker_remove($comment->nid->value, $comment->uid->value, $comment->changed->value);
+  _tracker_remove($comment->nid->target_id, $comment->uid->target_id, $comment->changed->value);
 }
 
 /**
  * Implements hook_comment_delete().
  */
 function tracker_comment_delete($comment) {
-  _tracker_remove($comment->nid->value, $comment->uid->value, $comment->changed->value);
+  _tracker_remove($comment->nid->target_id, $comment->uid->target_id, $comment->changed->value);
 }
 
 /**
diff --git a/core/modules/translation_entity/lib/Drupal/translation_entity/Tests/EntityTranslationUITest.php b/core/modules/translation_entity/lib/Drupal/translation_entity/Tests/EntityTranslationUITest.php
index 8c2dcef..2bd452a 100644
--- a/core/modules/translation_entity/lib/Drupal/translation_entity/Tests/EntityTranslationUITest.php
+++ b/core/modules/translation_entity/lib/Drupal/translation_entity/Tests/EntityTranslationUITest.php
@@ -311,11 +311,12 @@ protected function getTranslation(EntityInterface $entity, $langcode) {
    *   The property value.
    */
   protected function getValue(ComplexDataInterface $translation, $property, $langcode) {
+    $key = $property == 'user_id' ? 'target_id' : 'value';
     if (($translation instanceof EntityInterface) && !($translation instanceof EntityNG)) {
-      return is_array($translation->$property) ? $translation->{$property}[$langcode][0]['value'] : $translation->$property;
+      return is_array($translation->$property) ? $translation->{$property}[$langcode][0][$key] : $translation->$property;
     }
     else {
-      return $translation->get($property)->value;
+      return $translation->get($property)->{$key};
     }
   }
 
diff --git a/core/modules/translation_entity/translation_entity.pages.inc b/core/modules/translation_entity/translation_entity.pages.inc
index e2e76cc..a09e3c4 100644
--- a/core/modules/translation_entity/translation_entity.pages.inc
+++ b/core/modules/translation_entity/translation_entity.pages.inc
@@ -209,9 +209,10 @@ function translation_entity_prepare_translation(EntityInterface $entity, Languag
     $source_translation = $entity->getTranslation($source->langcode);
     $target_translation = $entity->getTranslation($target->langcode);
     foreach ($target_translation->getPropertyDefinitions() as $property_name => $definition) {
-      // @todo The value part should not be needed. Remove it as soon as things
-      //   do not break.
-      $target_translation->$property_name->value = $source_translation->$property_name->value;
+      // @todo The "key" part should not be needed. Remove it as soon as things
+      // do not break.
+      $key = key($entity->{$property_name}[0]->getProperties());
+      $target_translation->$property_name->{$key} = $source_translation->$property_name->{$key};
     }
   }
   else {
diff --git a/core/modules/user/lib/Drupal/user/Plugin/entity_reference/selection/UserSelection.php b/core/modules/user/lib/Drupal/user/Plugin/entity_reference/selection/UserSelection.php
new file mode 100644
index 0000000..ae98b08
--- /dev/null
+++ b/core/modules/user/lib/Drupal/user/Plugin/entity_reference/selection/UserSelection.php
@@ -0,0 +1,146 @@
+<?php
+
+/**
+ * @file
+ * Contains Drupal\user\Plugin\entity_reference\selection\UserSelection.
+ */
+
+namespace Drupal\user\Plugin\entity_reference\selection;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\Core\Database\Database;
+use Drupal\Core\Database\Query\SelectInterface;
+use Drupal\entity_reference\Plugin\entity_reference\selection\SelectionBase;
+
+/**
+ * Provides specific access control for the user entity type.
+ *
+ * @Plugin(
+ *   id = "user_default",
+ *   module = "user",
+ *   label = @Translation("User selection"),
+ *   entity_types = {"user"},
+ *   group = "default",
+ *   weight = 1
+ * )
+ */
+class UserSelection extends SelectionBase {
+
+  /**
+   * Overrides SelectionBase::settingsForm().
+   */
+  public static function settingsForm(&$field, &$instance) {
+    $form = parent::settingsForm($field, $instance);
+
+    // Merge-in default values.
+    $instance['settings']['handler_settings'] += array(
+      'filter' => array(
+        'type' => '_none',
+      ),
+    );
+
+    // Add user specific filter options.
+    $form['filter']['type'] = array(
+      '#type' => 'select',
+      '#title' => t('Filter by'),
+      '#options' => array(
+        '_none' => t('- None -'),
+        'role' => t('User role'),
+      ),
+      '#ajax' => TRUE,
+      '#limit_validation_errors' => array(),
+      '#default_value' => $instance['settings']['handler_settings']['filter']['type'],
+    );
+
+    $form['filter']['settings'] = array(
+      '#type' => 'container',
+      '#attributes' => array('class' => array('entity_reference-settings')),
+      '#process' => array('_entity_reference_form_process_merge_parent'),
+    );
+
+    if ($instance['settings']['handler_settings']['filter']['type'] == 'role') {
+      // Merge-in default values.
+      $instance['settings']['handler_settings']['filter'] += array(
+        'role' => NULL,
+      );
+
+      $form['filter']['settings']['role'] = array(
+        '#type' => 'checkboxes',
+        '#title' => t('Restrict to the selected roles'),
+        '#required' => TRUE,
+        '#options' => user_roles(TRUE),
+        '#default_value' => $instance['settings']['handler_settings']['filter']['role'],
+      );
+    }
+
+    return $form;
+  }
+
+  /**
+   * Overrides SelectionBase::buildEntityQuery().
+   */
+  public function buildEntityQuery($match = NULL, $match_operator = 'CONTAINS') {
+    $query = parent::buildEntityQuery($match, $match_operator);
+
+    // The user entity doesn't have a label column.
+    if (isset($match)) {
+      $query->condition('name', $match, $match_operator);
+    }
+
+    // Adding the 'user_access' tag is sadly insufficient for users: core
+    // requires us to also know about the concept of 'blocked' and 'active'.
+    if (!user_access('administer users')) {
+      $query->condition('status', 1);
+    }
+    return $query;
+  }
+
+  /**
+   * Overrides SelectionBase::entityQueryAlter().
+   */
+  public function entityQueryAlter(SelectInterface $query) {
+    if (user_access('administer users')) {
+      // In addition, if the user is administrator, we need to make sure to
+      // match the anonymous user, that doesn't actually have a name in the
+      // database.
+      $conditions = &$query->conditions();
+      foreach ($conditions as $key => $condition) {
+        if ($key !== '#conjunction' && is_string($condition['field']) && $condition['field'] === 'users.name') {
+          // Remove the condition.
+          unset($conditions[$key]);
+
+          // Re-add the condition and a condition on uid = 0 so that we end up
+          // with a query in the form:
+          // WHERE (name LIKE :name) OR (:anonymous_name LIKE :name AND uid = 0)
+          $or = db_or();
+          $or->condition($condition['field'], $condition['value'], $condition['operator']);
+          // Sadly, the Database layer doesn't allow us to build a condition
+          // in the form ':placeholder = :placeholder2', because the 'field'
+          // part of a condition is always escaped.
+          // As a (cheap) workaround, we separately build a condition with no
+          // field, and concatenate the field and the condition separately.
+          $value_part = db_and();
+          $value_part->condition('anonymous_name', $condition['value'], $condition['operator']);
+          $value_part->compile(Database::getConnection(), $query);
+          $or->condition(db_and()
+            ->where(str_replace('anonymous_name', ':anonymous_name', (string) $value_part), $value_part->arguments() + array(':anonymous_name' => user_format_name(user_load(0))))
+            ->condition('users.uid', 0)
+          );
+          $query->condition($or);
+        }
+      }
+    }
+
+    // Add the filter by role option.
+    if (!empty($this->instance['settings']['handler_settings']['filter'])) {
+      $filter_settings = $this->instance['settings']['handler_settings']['filter'];
+      if ($filter_settings['type'] == 'role') {
+        $tables = $query->getTables();
+        $base_table = $tables['base_table']['alias'];
+        $query->join('users_roles', 'ur', $base_table . '.uid = ur.uid');
+        $query->condition('ur.rid', $filter_settings['role']);
+      }
+    }
+  }
+}
diff --git a/core/modules/views/lib/Drupal/views/Plugin/entity_reference/selection/ViewsSelection.php b/core/modules/views/lib/Drupal/views/Plugin/entity_reference/selection/ViewsSelection.php
new file mode 100644
index 0000000..40e2cbd
--- /dev/null
+++ b/core/modules/views/lib/Drupal/views/Plugin/entity_reference/selection/ViewsSelection.php
@@ -0,0 +1,228 @@
+<?php
+
+/**
+ * @file
+ * Contains Drupal\views\Plugin\entity_reference\selection\ViewsSelection.
+ */
+
+namespace Drupal\views\Plugin\entity_reference\selection;
+
+use Drupal\Core\Annotation\Plugin;
+use Drupal\Core\Annotation\Translation;
+use Drupal\Core\Database\Query\SelectInterface;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\entity_reference\Plugin\Type\Selection\SelectionInterface;
+
+/**
+ * Plugin implementation of the 'selection' entity_reference.
+ *
+ * @Plugin(
+ *   id = "views",
+ *   module = "entity_reference",
+ *   label = @Translation("Views: Filter by an entity reference view"),
+ *   group = "views",
+ *   weight = 0
+ * )
+ */
+class ViewsSelection implements SelectionInterface {
+
+  /**
+   * The loaded View object.
+   *
+   * @var \Drupal\views\ViewExecutable;
+   */
+  protected $view;
+
+  /**
+   * Constructs a View selection handler.
+   */
+  public function __construct($field, $instance = NULL, EntityInterface $entity = NULL) {
+    $this->field = $field;
+    $this->instance = $instance;
+    $this->entity = $entity;
+  }
+
+  /**
+   * Implements Drupal\entity_reference\Plugin\Type\Selection\SelectionInterface::settingsForm().
+   */
+  public static function settingsForm(&$field, &$instance) {
+    $view_settings = empty($instance['settings']['handler_settings']['view']) ? array() : $instance['settings']['handler_settings']['view'];
+    $displays = views_get_applicable_views('entity_reference_display');
+    // Filter views that list the entity type we want, and group the separate
+    // displays by view.
+    $entity_info = entity_get_info($field['settings']['target_type']);
+    $options = array();
+    foreach ($displays as $data) {
+      list($view, $display_id) = $data;
+      if ($view->storage->get('base_table') == $entity_info['base_table']) {
+        $name = $view->storage->get('name');
+        $display = $view->storage->get('display');
+        $options[$name . ':' . $display_id] = $name . ' - ' . $display[$display_id]['display_title'];
+      }
+    }
+
+    // The value of the 'view_and_display' select below will need to be split
+    // into 'view_name' and 'view_display' in the final submitted values, so
+    // we massage the data at validate time on the wrapping element (not
+    // ideal).
+    $plugin = new static($field, $instance);
+    $form['view']['#element_validate'] = array(array($plugin, 'settingsFormValidate'));
+
+    if ($options) {
+      $default = !empty($view_settings['view_name']) ? $view_settings['view_name'] . ':' . $view_settings['display_name'] : NULL;
+      $form['view']['view_and_display'] = array(
+        '#type' => 'select',
+        '#title' => t('View used to select the entities'),
+        '#required' => TRUE,
+        '#options' => $options,
+        '#default_value' => $default,
+        '#description' => '<p>' . t('Choose the view and display that select the entities that can be referenced.<br />Only views with a display of type "Entity Reference" are eligible.') . '</p>',
+      );
+
+      $default = !empty($view_settings['arguments']) ? implode(', ', $view_settings['arguments']) : '';
+      $form['view']['arguments'] = array(
+        '#type' => 'textfield',
+        '#title' => t('View arguments'),
+        '#default_value' => $default,
+        '#required' => FALSE,
+        '#description' => t('Provide a comma separated list of arguments to pass to the view.'),
+      );
+    }
+    else {
+      $form['view']['no_view_help'] = array(
+        '#markup' => '<p>' . t('No eligible views were found. <a href="@create">Create a view</a> with an <em>Entity Reference</em> display, or add such a display to an <a href="@existing">existing view</a>.', array(
+          '@create' => url('admin/structure/views/add'),
+          '@existing' => url('admin/structure/views'),
+        )) . '</p>',
+      );
+    }
+    return $form;
+  }
+
+  /**
+   * Initializes a view.
+   *
+   * @param string|null $match
+   *   (Optional) Text to match the label against. Defaults to NULL.
+   * @param string $match_operator
+   *   (Optional) The operation the matching should be done with. Defaults
+   *   to "CONTAINS".
+   * @param int $limit
+   *   Limit the query to a given number of items. Defaults to 0, which
+   *   indicates no limiting.
+   * @param array|null $ids
+   *   Array of entity IDs. Defaults to NULL.
+   *
+   * @return bool
+   *   Return TRUE if the views was initialized, FALSE otherwise.
+   */
+  protected function initializeView($match = NULL, $match_operator = 'CONTAINS', $limit = 0, $ids = NULL) {
+    $view_name = $this->instance['settings']['handler_settings']['view']['view_name'];
+    $display_name = $this->instance['settings']['handler_settings']['view']['display_name'];
+    $arguments = $this->instance['settings']['handler_settings']['view']['arguments'];
+    $entity_type = $this->field['settings']['target_type'];
+
+    // Check that the view is valid and the display still exists.
+    $this->view = views_get_view($view_name);
+    if (!$this->view  || !$this->view->access($display_name)) {
+      throw new \RuntimeException('The view %view_name is no longer eligible for the %field_name field.', array('%view_name' => $view_name, '%field_name' => $this->instance['label']));
+    }
+    $this->view->setDisplay($display_name);
+
+    // Pass options to the display handler to make them available later.
+    $entity_reference_options = array(
+      'match' => $match,
+      'match_operator' => $match_operator,
+      'limit' => $limit,
+      'ids' => $ids,
+    );
+    $this->view->displayHandlers->get($display_name)->setOption('entity_reference_options', $entity_reference_options);
+    return TRUE;
+  }
+
+  /**
+   * Implements Drupal\entity_reference\Plugin\Type\Selection\SelectionInterface::getReferencableEntities().
+   */
+  public function getReferencableEntities($match = NULL, $match_operator = 'CONTAINS', $limit = 0) {
+    $display_name = $this->instance['settings']['handler_settings']['view']['display_name'];
+    $arguments = $this->instance['settings']['handler_settings']['view']['arguments'];
+    $result = array();
+    if ($this->initializeView($match, $match_operator, $limit)) {
+      // Get the results.
+      $result = $this->view->executeDisplay($display_name, $arguments);
+    }
+
+    $return = array();
+    if ($result) {
+      foreach($this->view->result as $row) {
+        $entity = $row->_entity;
+        $return[$entity->bundle()][$entity->id()] = $entity->label();
+      }
+    }
+    return $return;
+  }
+
+  /**
+   * Implements Drupal\entity_reference\Plugin\Type\Selection\SelectionInterface::countReferencableEntities().
+   */
+  public function countReferencableEntities($match = NULL, $match_operator = 'CONTAINS') {
+    $this->getReferencableEntities($match, $match_operator);
+    return $this->view->pager->get_total_items();
+  }
+
+  /**
+   * Implements Drupal\entity_reference\Plugin\Type\Selection\SelectionInterface::validateReferencableEntities().
+   */
+  public function validateReferencableEntities(array $ids) {
+    $display_name = $this->instance['settings']['handler_settings']['view']['display_name'];
+    $arguments = $this->instance['settings']['handler_settings']['view']['arguments'];
+    $result = array();
+    if ($this->initializeView(NULL, 'CONTAINS', 0, $ids)) {
+      // Get the results.
+      $entities = $this->view->executeDisplay($display_name, $arguments);
+      $result = array_keys($entities);
+    }
+    return $result;
+  }
+
+  /**
+   * Implements Drupal\entity_reference\Plugin\Type\Selection\SelectionInterface::validateAutocompleteInput().
+   */
+  public function validateAutocompleteInput($input, &$element, &$form_state, $form, $strict = TRUE) {
+    return NULL;
+  }
+
+  /**
+   * Implements Drupal\entity_reference\Plugin\Type\Selection\SelectionInterface::entityQueryAlter().
+   */
+  public function entityQueryAlter(SelectInterface $query) {}
+
+  /**
+   * Element validate; Check View is valid.
+   */
+  public function settingsFormValidate($element, &$form_state, $form) {
+    // Split view name and display name from the 'view_and_display' value.
+    if (!empty($element['view_and_display']['#value'])) {
+      list($view, $display) = explode(':', $element['view_and_display']['#value']);
+    }
+    else {
+      form_error($element, t('The views entity selection mode requires a view.'));
+      return;
+    }
+
+    // Explode the 'arguments' string into an actual array. Beware, explode() turns an
+    // empty string into an array with one empty string. We'll need an empty array
+    // instead.
+    $arguments_string = trim($element['arguments']['#value']);
+    if ($arguments_string === '') {
+      $arguments = array();
+    }
+    else {
+      // array_map is called to trim whitespaces from the arguments.
+      $arguments = array_map('trim', explode(',', $arguments_string));
+    }
+
+    $value = array('view_name' => $view, 'display_name' => $display, 'arguments' => $arguments);
+    form_set_value($element, $value, $form_state);
+  }
+}
diff --git a/core/modules/views/lib/Drupal/views/Tests/EntityReference/SelectionTest.php b/core/modules/views/lib/Drupal/views/Tests/EntityReference/SelectionTest.php
new file mode 100644
index 0000000..26e2e82
--- /dev/null
+++ b/core/modules/views/lib/Drupal/views/Tests/EntityReference/SelectionTest.php
@@ -0,0 +1,83 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\views\Tests\EntityReference\SelectionTest.
+ */
+
+namespace Drupal\views\Tests\EntityReference;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests entity-reference selection handler.
+ */
+class SelectionTest extends WebTestBase {
+
+  public static $modules = array('views', 'entity_reference', 'entity_reference_test');
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Entity reference selection handler',
+      'description' => 'Tests entity-reference selection handler provided by Views.',
+      'group' => 'Views',
+    );
+  }
+
+  /**
+   * Tests the selection handler.
+   */
+  public function testSelectionHandler() {
+    // Create nodes.
+    $type = $this->drupalCreateContentType()->type;
+    $node1 = $this->drupalCreateNode(array('type' => $type));
+    $node2 = $this->drupalCreateNode(array('type' => $type));
+    $node3 = $this->drupalCreateNode();
+
+    $nodes = array();
+    foreach (array($node1, $node2, $node3) as $node) {
+      $nodes[$node->type][$node->nid] = $node->label();
+    }
+
+    // Build a fake field instance.
+    $field = array(
+      'translatable' => FALSE,
+      'entity_types' => array(),
+      'settings' => array(
+        'target_type' => 'node',
+      ),
+      'field_name' => 'test_field',
+      'type' => 'entity_reference',
+      'cardinality' => '1',
+    );
+    $instance = array(
+      'settings' => array(
+        'handler' => 'views',
+        'handler_settings' => array(
+          'target_bundles' => array(),
+          'view' => array(
+            'view_name' => 'test_entity_reference',
+            'display_name' => 'entity_reference_1',
+            'arguments' => array(),
+          ),
+        ),
+      ),
+    );
+
+    // Get values from selection handler.
+    $handler = entity_reference_get_selection_handler($field, $instance);
+    $result = $handler->getReferencableEntities();
+
+    $success = FALSE;
+    foreach ($result as $node_type => $values) {
+      foreach ($values as $nid => $label) {
+        if (!$success = $nodes[$node_type][$nid] == trim(strip_tags($label))) {
+          // There was some error, so break.
+          break;
+        }
+      }
+    }
+
+    $this->assertTrue($success, 'Views selection handler returned expected values.');
+  }
+}
