www: update the "Follow what's going on" section too

Includes some style tweaks and removes the tautological observation that "Clang
is still under heavy development" -- it hopefully always will be.

llvm-svn: 199401
diff --git a/clang/www/get_involved.html b/clang/www/get_involved.html
index 9ed2d47..5d16db9 100644
--- a/clang/www/get_involved.html
+++ b/clang/www/get_involved.html
@@ -54,7 +54,13 @@
 list</a>.  All of these lists have archives, so you can browse through previous
 discussions or follow the list development on the web if you prefer.</p>
 
-<p>If you're looking for something to work on, check out our <a href="OpenProjects.html">Open Projects</a> page or go look through the <a href="http://llvm.org/bugs/">Bugzilla bug database</a>.</p>
+<p>You can also follow the <a href="http://planet.clang.org/">Planet Clang</a>
+community news feed which offers a window into the world, work and lives of
+Clang developers, contributors and the standards they implement.</p>
+
+<p>If you're looking for something to work on, check out our <a
+href="OpenProjects.html">Open Projects</a> page or look through the <a
+href="http://llvm.org/bugs/">Bugzilla bug database</a>.</p>
 
 <h2 id="criteria">Contributing Extensions to Clang</h2>