Yeah, saw it a few days ago. Trailers and teasers very rarely blow my mind, but this one is SO GOOD. I mean, it looks less scripted and more like machinima.
Plus, the whole Infinite setting and theme is amazing. It looks more like a spiritual successor to Bioshock than a sequel, though, just like the System Shock -> Bioshock thing. Maybe Aeroshock. But, okay, they're aiming for brand recognition with the title, I can understand that.
EDIT: Oh, right, anyone know why they're moving like it's a Pixar cartoon? I kinda like it, it's perky and easily animated, and I wouldn't mind mildly deformed characters if it fits the theme.