Add build_py_2to3.
diff --git a/Misc/NEWS b/Misc/NEWS
index 279da30..4379997 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -23,6 +23,10 @@
 Library
 -------
 
+- The class distutils.commands.build_py.build_py_2to3 can be used
+  as a build_py replacement to automatically run 2to3 on modules
+  that are going to be installed.
+
 - A new pickle protocol (protocol 3) is added with explicit support
   for bytes.  This is the default protocol.  It intentionally cannot
   be unpickled by Python 2.x.