EA has confirmed some bits of info for SSX: Deadly Descents. Apparently the game features a rewind button so you can undo your weaksauce boarding skills, as well as 70 mountains to test that on. Those 70 mountains cross 17 regions, and include The Alps, Himalayas, Kilimanjaro, Siberia and Caucasus.
The clever bit is that the mountains are made automatically by the Deadly Descents, which pulls in data for use from Google Earth. Apparently, the game wants to replicate the feeling of danger associated with thin air, ice and temperature.