Yes, he is the main antagonist in the game and he is as a playable character in all modes after you beat him in World Tour for the final time.
The release will not occur until January 3 2012 according to Gamestop
Apparently, there is a new SSX in the works, which is due to be released this winter (possibly around Christmas time). This game is called SSX: Deadly Descents, and follows teams of snowboarders who compete to be the first to successfully complete a run down a mountain.
SSX happened in 2000.
Griff Johnson goes by Griff.
ssx on tour
SSX on Tour happened in 2005.
Matt Griff's birth name is Matthew Griff.
SSX on Tour happened in 2005.
SSX was created on 2000-10-26.
SSX Blur happened in 2007.
SSX Tricky happened in 2001.
SSX Tricky was created in 2002.