diff --git a/CHANGES.html b/CHANGES.html
index 0fece7e35..754f49e0b 100644
--- a/CHANGES.html
+++ b/CHANGES.html
@@ -43,6 +43,17 @@ the cracks, unfortunately.  If you, as a user, can suggest improvements
 to this file based on your experience, please contribute a patch or drop
 us a note on ns-developers mailing list.  </p>
 
+<hr>
+<h1>Changes from ns-3.9 to ns-3.10</h1>
+
+<h2>Changes to build system:</h2>
+
+<h2>New API:</h2>
+
+<h2>Changes to existing API:</h2>
+
+<h2>Changed behavior:</h2>
+
 <hr>
 <h1>Changes from ns-3.8 to ns-3.9</h1>
 
diff --git a/RELEASE_NOTES b/RELEASE_NOTES
index c445cadb6..62cd0c221 100644
--- a/RELEASE_NOTES
+++ b/RELEASE_NOTES
@@ -9,6 +9,26 @@ http://www.nsnam.org including tutorials: http://www.nsnam.org/tutorials.html
 Consult the file CHANGES.html for more detailed information about changed
 API and behavior across ns-3 releases.
 
+Release 3.10
+===========
+
+Availability
+------------
+This release is not yet available.
+
+Supported platforms
+-------------------
+ns-3.10 has been tested on the following platforms: (TBD)
+
+New user-visible features
+-------------------------
+
+Bugs fixed
+----------
+
+Known issues
+------------
+
 Release 3.9
 ===========