Update release-note template for 8.12.0.alpha1 (#12072)

* Update release-note template for 8.12.0.alpha1

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

@@ -83,7 +83,10 @@
             enhancements. Below is a list of the most notable changes:</p>
 
         <ul>
-		<li></li>
+		<li>Recalculate column widths when vertical scrollbar hidden/shown</li>
+		<li>Add support for "ww" in date format</li>
+		<li>All updates to Escalator size should get reported to LayoutManager</li>
+		<li>Ensure type safety and serializable nature of all the listeners</li>
         </ul>
 
         </p>