Added __enter__ and __exit__ functions to HKEY object
Added ExpandEnvironmentStrings to the _winreg module.
diff --git a/Misc/NEWS b/Misc/NEWS
index e1745a7..c77ce62 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -944,6 +944,10 @@
 Extension Modules
 -----------------
 
+- _winreg's HKEY object have gained __enter__ and __exit__ functions to support he
+  context manager protocol. The _winreg module also got a new function
+  ``ExpandEnvironmentStrings`` to expand REG_EXPAND_SZ keys.
+
 - Issue #1646: Make socket support TIPC. The socket module now has support
   for TIPC under Linux, see http://tipc.sf.net/ for more information.