updated download links

Change-Id: Ie17e80baff4a117d9dccb6f351e842db4cd704cf
Signed-off-by: Ralph Soika <ralph.soika@imixs.com>
diff --git a/whatsnew/index.php b/whatsnew/index.php
index 892a7d1..150d400 100644
--- a/whatsnew/index.php
+++ b/whatsnew/index.php
@@ -17,6 +17,7 @@
 	<h2>$pageTitle</h2>
 	<ul>
 
+		<li><a href="whatsnew-1.5.3.php">Version 1.5.3 Eclipse 2020-09 Release (April 2021)</a></li>
 		<li><a href="whatsnew-1.5.2.php">Version 1.5.2 Eclipse 2020-06 Release (June 2020)</a></li>
 		<li><a href="whatsnew-1.4.1.php">Version 1.4.1 Eclipse Oxygen Release (September 20, 2017)</a></li>
 		<li><a href="whatsnew-1.4.0.php">Version 1.4.0 Eclipse Oxygen Release (June 22, 2017)</a></li>