I stayed last week, and was upgraded to a Fantastic Suite on the 10th floor. I must say I am a big fan of the room, and would consider paying for it if I ever come up with the wife for a weekend. Makes the hotel stay a lot more comfortable than if in the regular rooms.
The only other time I received a suite upgrade was a one night stay a few weeks ago when they had a party on the roof scheduled until 2 AM. Needless to say I turned down that "upgrade".