doc: update release.r60.1 notes

R=dsymonds
CC=golang-dev
https://golang.org/cl/5045045

doc/devel/release.html

@@ -94,9 +94,14 @@ more accessible.
 <p>
 r60.1 includes a 
 <a href="http://code.google.com/p/go/source/detail?r=1824581bf62d">linker
-fix</a> and a pair of
+fix</a>, a pair of
 <a href="http://code.google.com/p/go/source/detail?r=9ef4429c2c64">goplay</a>
-<a href="http://code.google.com/p/go/source/detail?r=d42ed8c3098e">fixes</a>.
+<a href="http://code.google.com/p/go/source/detail?r=d42ed8c3098e">fixes</a>,
+and a <code>json</code> package
+<a href="http://code.google.com/p/go/source/detail?r=d5e97874fe84">fix</a> and
+a new
+<a href="http://code.google.com/p/go/source/detail?r=4f0e6269213f">struct tag
+option</a>.
 </p>
 
 <h2 id="r59">r59 (released 2011/08/01)</h2>