updated changelog for release

changelog.html

@@ -54,6 +54,11 @@ Upcoming changes</a>
 
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+<h3><a name=v1.611>What's new in 1.611</a> (2015/04/26)</h3>
 <ul class=image>
   <li class=bug>
     <code>Descriptor.getId</code> fix in 1.610 introduced a regression affecting at least the Copy Artifacts plugin.
@@ -73,7 +78,6 @@ Upcoming changes</a>
     Correctly identify Channel listener onClose propagated exceptions
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-28062">issue 28062</a>
 </ul>
-</div><!--=TRUNK-END=-->
 <h3><a name=v1.610>What's new in 1.610</a> (2015/04/19)</h3>
 <ul class=image>
   <li class=bug>