Is XNA available to be used from within Visual Studio 2013 (Ultimate) Preview? I have not heard, nor seen anything about XNA for VS 2013.
I have just installed VS 2013 and it's not there; I have it in VS 2012, so maybe there's a way to get it to work with 2013?
On codeplex was released new XNA Extension for Visual Studio 2013. You can download it from: https://msxna.codeplex.com/releases