update CHANGES.html

CHANGES.html

@@ -93,6 +93,10 @@ us a note on ns-developers mailing list.</p>
   </li>
   <li> New PacketSocketServer and PacketSocketClient apps, meant to be used in tests.
   </li>
+  <li> Tcp Timestamps and Window Scale options have been added and are enabled by default (controllable by attribute).
+  </li>
+  <li> A new CoDel queue model has been added to the 'internet' module.  
+  </li>
 </ul>
 
 <h2>Changes to existing API:</h2>
@@ -121,10 +125,12 @@ us a note on ns-developers mailing list.</p>
 
 <h2>Changes to build system:</h2>
 <ul>
+<li> None for this release. </li>
 </ul>
 
 <h2>Changed behavior:</h2>
 <ul>
+<li> Behavior will be changed due to the list of bugs fixed (listed in RELEASE_NOTES); users are requested to review that list as well.
 </ul>
 
 <hr>