bpo-44490: Add 'Whats New' docs regarding types.Union changes (GH-27215)

diff --git a/Doc/whatsnew/3.10.rst b/Doc/whatsnew/3.10.rst
index d0f3b69b7861896fd3b4729ac7682947e871c817..8d8e3fabf69d9b88b83160d4e726363020380d5a 100644 (file)
--- a/Doc/whatsnew/3.10.rst
+++ b/Doc/whatsnew/3.10.rst
@@ -747,7 +747,8 @@ and :func:`issubclass`::
 
 See :ref:`types-union` and :pep:`604` for more details.
 
-(Contributed by Maggie Moss and Philippe Prados in :issue:`41428`.)
+(Contributed by Maggie Moss and Philippe Prados in :issue:`41428`,
+with additions by Yurii Karabas and Serhiy Storchaka in :issue:`44490`.)
 
 
 PEP 612: Parameter Specification Variables