add compat note

diff --git a/Misc/NEWS b/Misc/NEWS
index 6cf0050018e4548345c19758057ce31afcb32ab4..93b7494a2db96949b0ba4922ea46e16a8d558f9d 100644 (file)
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -180,6 +180,8 @@ Core and Builtins
 Library
 -------
 
+- UserDict is now an new-style class.
+
 - Issue #6963: Added "maxtasksperchild" argument to multiprocessing.Pool,
   allowing for a maximum number of tasks within the pool to be completed by
   the worker before that worker is terminated, and a new one created to