Autodesk 3ds Max 2013 has been announced and here are the latest New Features videos. Personally I am looking forward to using iRay Active Shade in a viewport (video below). I understand that iRay Active Shade was only available in 2012 in the subscription pack. I have started making the move from Mental Ray to iRay now and I suggest trying Niveda's iRay out if you have not done so already.http://www.youtube.com/watch?feature=player_embedded&v=pji7hLREtoc Check out all the new feature videos here.
Autodesk 3ds Max 2013 Announced - New Features Videos