news.html: add 2011.08-rc2 announcement link

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

docs/news.html

@@ -9,7 +9,8 @@
 
     <p>RC2 is out with more bugfixes. See the <a
     href="http://git.buildroot.net/buildroot/plain/CHANGES?id=2011.08_rc2">CHANGES</a>
-    file for details.
+    file for details, and read the
+    <a href="http://lists.busybox.net/pipermail/buildroot/2011-August/045211.html">announcement</a>.
 
     <p>Head to the <a href="/downloads/">downloads page</a> to pick up the
     <a href="/downloads/buildroot-2011.08-rc2.tar.bz2">2011.08-rc2