Well you probably won't see any "Halo 3" footage, apparently that's not even the game's current title, atm it's called "Forerunner" obviously named after the ships from Halo 2. Although it may eventually be called Halo 3: Forerunner or just Forerunner, but that's it's title right now.
Personally, I'm looking forward to more news about Age of Conan and WoW: The Burning Crusade, PC wise anyway. Console wise, Resident Evil 5, Superman Returns, TLoZ: Twilight Princess & Phantom Hourglass, Killzone 2, Call of Duty 3 (confirmed to be hopefully ready for the PS3's target launch period of early November 2006) and Medal of Honor: Airborne.
Oh, and Stranglehold 😄
I could name a few more but, yeah lol.