WoW: Cataclysm
I've always been very into the quite often overlooked storyline of WoW, and Cata seems to be really adding to it so biiig excite for me (once I get my subscription back, anyway..)
Crackdown 2
One of the games I will get because I KNOW I'll have friends online to play it with. The majority of games with great co-op I've skipped because noone else got them.
CoD 7 (The Treyarch one)
I'll get it anyway probably, but if the rumours are true and the Vietnam era will be the subject of it, I'm very interested in the weaponry of those times. WW2 weapons have been done to death, and modern weapons are going the same way in my opinion in games, so I'm interested in what was in-between..