I think the Verge article specified that Halo 4 will be there:
"This week, press from around the world journey to San Francisco to spend a day immersed in much of what will shape the Xbox 360 in 2012. They'll have a chance to see and play a cross-section of the games that will hit Microsoft's console over the next 12 months.
Traditional titles like Halo 4, Darksiders II and Resident Evil: Operation Raccoon City will share space with the Kinect-powered experiences of Steel Battalion: Heavy Armor and Kinect Star Wars. Xbox Live Arcade's growing influence will also be obvious, with nearly a dozen downloadable titles on hand including Counter-Strike: Global Offensive, Bloodforge and Diabolical Pitch."
Indeed. But given all the bullshit we've seen posted today, I'm going to remain cautious until the moment the red hot awesome is spilling out of my monitor, or is at least confirmed to be incoming.