The Visual Studio 2012 support matrix for Automated UI Testing (Coded UI) has been released by Microsoft and the full post can be found here. Thank you Shubhra!
There are a couple of items on the list that you should definitely keep your eye on. The first item is the support for Silverlight 4 and 5. This should make the Silverlight community happy. I would also note the Planned items (blue dot) which are cross browser support and Flash/Java. Happy Coding!