The next installment in the Amped series is going to be done by 2K, instead of the others, and it apparently will be more like a unrealistic snowboarding game, which sucks.
The review that I read mentioned that they were dissapointed in the choice to do it differently, b/c they loved how challenging it was. It seems that they want to make a game that can be beat in one sitting.
It also looks like they are going to call it Top Spin 2 or something stupid like that.
Here is the Trailer for the game I found: