release notes additions

all/src/main/templates/release-notes.html

@@ -87,6 +87,8 @@
             <li>Support for improved version of <tt>ContextMenu</tt> add-on (version 3.0.0.beta1).</li>
             <li>Rewrite <tt>OSGi</tt> bundles activation mechanism to follow <tt>OSGi</tt> best practices</li>
             <li>Change the return type of <tt>Grid.asMultiSelect</tt> and <tt>Grid.asSingleSelect</tt> that has API to access the features of corresponding selection model</li>
+            <li>Performance improvements for the Vaadin 7 compatibility Grid, picked from the Vaadin 7 branch.</li>
+            <li>Fixes to Vaadin 7 compatibility Grid issues #10343 and #10998, picked from the Vaadin 7 branch.</li>
         </ul>
 
         </p>