--- a/CHANGES.html	Sun Sep 18 12:23:17 2011 +0100
+++ b/CHANGES.html	Sun Sep 18 14:24:24 2011 -0700
@@ -44,6 +44,25 @@
 us a note on ns-developers mailing list.  </p>
 
 <hr>
+<h1>Changes from ns-3.12 to ns-3.13</h1>
+
+<h2>Changes to build system:</h2>
+<ul>
+</ul>
+
+<h2>New API:</h2>
+<ul>
+</ul>
+
+<h2>Changes to existing API:</h2>
+<ul>
+</ul>
+
+<h2>Changed behavior:</h2>
+<ul>
+</ul>
+
+<hr>
 <h1>Changes from ns-3.11 to ns-3.12</h1>
 
 <h2>Changes to build system:</h2>

--- a/RELEASE_NOTES	Sun Sep 18 12:23:17 2011 +0100
+++ b/RELEASE_NOTES	Sun Sep 18 14:24:24 2011 -0700
@@ -9,6 +9,27 @@
 Consult the file CHANGES.html for more detailed information about changed
 API and behavior across ns-3 releases.
 
+Release 3.13
+==============
+
+Availability
+------------
+This release is not yet available.
+
+Bugs fixed
+----------
+
+Supported platforms
+-------------------
+
+New user-visible features
+-------------------------
+
+Known issues
+------------
+In general, known issues are tracked on the project tracker available
+at http://www.nsnam.org/bugzilla/
+
 Release 3.12.1
 ==============