diff --git a/core/lib/Drupal/Component/Plugin/Context/ContextDefinitionInterface.php b/core/lib/Drupal/Component/Plugin/Context/ContextDefinitionInterface.php
index 3d2337b..316be6f 100644
--- a/core/lib/Drupal/Component/Plugin/Context/ContextDefinitionInterface.php
+++ b/core/lib/Drupal/Component/Plugin/Context/ContextDefinitionInterface.php
@@ -9,6 +9,9 @@
 
 /**
  * Interface for context definitions.
+ *
+ * WARNING: This interface is going to receive some additions as part of
+ * https://www.drupal.org/node/2346999.
  */
 interface ContextDefinitionInterface {
 
diff --git a/core/lib/Drupal/Core/Action/ActionInterface.php b/core/lib/Drupal/Core/Action/ActionInterface.php
index 4147cea..a500f10 100644
--- a/core/lib/Drupal/Core/Action/ActionInterface.php
+++ b/core/lib/Drupal/Core/Action/ActionInterface.php
@@ -13,6 +13,22 @@
 /**
  * Provides an interface for an Action plugin.
  *
+ * WARNING: The action API is going to receive some additions before release.
+ * The following additions are likely to happen:
+ *  - The way configuration is handled and configuration forms are built is
+ *    likely to change in order for the plugin to be of use for Rules.
+ *  - Actions are going to become context-aware in
+ *    https://drupal.org/node/2011038, what will deprecated the 'type'
+ *    annotation.
+ *  - Instead of action implementations saving entities, support for marking
+ *    required context as to be saved by the execution manager will be added as
+ *    part of https://www.drupal.org/node/2347017.
+ *  - Actions will receive a data processing API that allows for token
+ *    replacements to happen outside of the action plugin implementations,
+ *    see https://www.drupal.org/node/2347023.
+ *  - Actions will have to implement access control for checking who is allowed
+ *    to configure or perform the action at https://www.drupal.org/node/2172017.
+ *
  * @see \Drupal\Core\Annotation\Action
  * @see \Drupal\Core\Action\ActionManager
  * @see \Drupal\Core\Action\ActionBase
diff --git a/core/lib/Drupal/Core/Condition/ConditionInterface.php b/core/lib/Drupal/Core/Condition/ConditionInterface.php
index fb23fe2..40c36d3 100644
--- a/core/lib/Drupal/Core/Condition/ConditionInterface.php
+++ b/core/lib/Drupal/Core/Condition/ConditionInterface.php
@@ -28,6 +28,17 @@
  * @todo Replace the dependency on \Drupal\Core\Form\FormInterface with a new
  *   interface from https://drupal.org/node/2006248.
  *
+ * WARNING: The condition API is going to receive some additions before release.
+ * The following additions are likely to happen:
+ *  - The way configuration is handled and configuration forms are built is
+ *    likely to change in order for the plugin to be of use for Rules.
+ *  - Condition will receive a data processing API that allows for token
+ *    replacements to happen outside of the plugin implementations,
+ *    see https://www.drupal.org/node/2347023.
+ *  - Conditions will have to implement access control for checking who is
+ *    allowed to configure or perform the action at
+ *    https://www.drupal.org/node/2172017.
+ *
  * @see \Drupal\Core\TypedData\TypedDataManager::create()
  * @see \Drupal\Core\Executable\ExecutableInterface
  * @see \Drupal\Core\Condition\ConditionManager