What's New in Python 3.5: mention signal.set_wakeup_fd() enhancement on Windows
diff --git a/Doc/whatsnew/3.5.rst b/Doc/whatsnew/3.5.rst
index 61a95a1..4c272e6 100644
--- a/Doc/whatsnew/3.5.rst
+++ b/Doc/whatsnew/3.5.rst
@@ -410,6 +410,9 @@
 signal
 ------
 
+* On Windows, :func:`signal.set_wakeup_fd` now also supports socket handles.
+  (Contributed by Victor Stinner in :issue:`22018`.)
+
 * Different constants of :mod:`signal` module are now enumeration values using
   the :mod:`enum` module. This allows meaningful names to be printed during
   debugging, instead of integer “magic numbers”.  (Contributed by Giampaolo