NEWS entry for subprocess module C extension in r78946.
diff --git a/Misc/NEWS b/Misc/NEWS
index e810632..f937d55 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -283,6 +283,10 @@
Library
-------
+- The internals of the subprocess module on POSIX systems have been replaced
+ by an extension module (_posixsubprocess) so that the fork()+exec() can be
+ done safely without the possibility of deadlock in multithreaded applications.
+
- Issue #6472: The xml.etree package is updated to ElementTree 1.3. The
cElementTree module is updated too.