You mean besides more Rock Band DLC?
Lost: Via Domus
Condemned 2: Bloodshot
Tom Clancy's Rainbow Six Vegas 2
A little further into the future (some unannounced release dates):
The Bourne Conspiracy
LEGO Indiana Jones
Star Wars: The Force Unleashed
The Chronicles of Riddick: Assault on Dark Athena
Saints Row 2
There's probably a few others, too. But those are the big ones.