By smiletrl on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
8.x
Issue links: 
https://www.drupal.org/node/2051923
Description: 

To avoid confusion with the field config entity, \Drupal\Core\Entity\Field\Field has been renamed to \Drupal\Core\Field\FieldItemList.

The following subclasses and interfaces have been renamed accordingly.
Drupal\Core\Entity\Field\Field --> \Drupal\Core\Field\FieldItemList
Drupal\Core\Entity\Field\FieldInterface --> \Drupal\Core\Field\FieldItemListInterface
\Drupal\file\Plugin\field\field_type\FileField --> \Drupal\file\Plugin\Field\FieldType\FileFieldItemList

Impacts: 
Module developers