Yep, they're real. Xbox boss Phil Spencer confirmed in an interview this afternoon that the footage you saw for Forza Motorsport 5 and Remedy's Quantum Break this morning are running on Xbox One dev kits. Not renders or some other trickery, you skeptics. I know some out there were questioning some of the screenshots and footage from this morning. Stop. They're the real deal.
The Call of Duty: Ghosts footage we saw in today's announcement was also Xbox One footage.
Nice. This system is a beast.