Added a link to the release notes.

downloads.php

diff --git a/downloads.php b/downloads.php
index 097b211..6590e02 100644
--- a/downloads.php
+++ b/downloads.php
@@ -26,6 +26,7 @@
 		<div class="homeitem3col">
 			
 			<p><strong>The current latest version of SWTBot is <? echo preg_replace('/-.*/', '', $helios_dev_version); ?>. Please upgrade if you're on an older version.</strong></p>
+			<p>Be sure to read the <a href=http://download.eclipse.org/technology/swtbot/helios/dev-build/RELEASE_NOTES.txt">Release Notes</a> if you're upgrading.</p>
 			<!-- <h3>Nightly build</h3>
 
 			<p>Nightly builds of SWTBot are extremely stable, since SWTBot has a large number of tests, providing very good test coverage.</p> -->