Add a note about changes related to the weak reference objects.
diff --git a/Misc/NEWS b/Misc/NEWS
index e89b789..a91b7af 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -36,6 +36,10 @@
exceptions (which could mask bugs in a __getattr__ hook, for
example).
+- Weak reference objects are now part of the core and offers a C API.
+ A bug which could allow a core dump when binary operations involved
+ proxy reference has been fixed.
+
Extension modules
- thread.start_new_thread() now returns the thread ID (previously None).