Change record status: 
Introduced in branch: 
7.x-1.x
Introduced in version: 
7.x-1.0-RC6
Description: 

Return values from getReferencableEntities() are now keyed by bundle.
When using "select" widget, this will result with optgroup for all entity-types, unless there is only a single bundle in the result.

Before

$handler->getReferencableEntities() ;

// This would result in a flat array.
array(
  1 => 'foo',
  2 => 'bar',
);

After

$handler->getReferencableEntities() ;

// This would result in array keyed by bundle.
array(
  'article' => array(
    1 => 'foo',
  ),
  'page' => array(
    2 => 'bar',
  ),
);
Impacts: 
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: 
Other updates done