Microsoft released Release Management for Visual Studio 2013 Update 2 today. The Community Technology Preview and Release Candidate versions have been floating around for a while now, but now it's out for real.
You can grab it from MSDN, as always!
I blogged about the big new feature in Update 2, server tags,back in February, not too long after the first CTP came out. The feature hasn't really changed, so you can go read all about it here.
Finally, another improvement was made for the continuous deployment scenario and the integration with other CI builds. You can read about it in my new blog post here.