Change record status: 
Introduced in branch: 

In #1763974: Convert entity type info into plugins, entity classes were moved to a standard location of Drupal\$provider\Plugin\Core\Entity.

For example, the node class was located at Drupal\node\Plugin\Core\Entity\Node.

To simplify the namespaces, all entity type classes have been moved. The node class is now at Drupal\node\Entity\Node.

However, most code should use the entity type interface, for example Drupal\node\NodeInterface.

Module developers
Updates Done (doc team, etc.)
Online documentation: 
Not done
Theming guide: 
Not done
Module developer documentation: 
Not done
Examples project: 
Not done
Coder Review: 
Not done
Coder Upgrade: 
Not done
Other updates done