I wonder if it will be an actual teaser video (similar to the procedural awareness and running with green screen videos from two years ago) or a teaser trailer like they would show on G4TV. My guess is the first
Running Video Example
http://www.youtube.com/watch?v=CllLk...A7AD7F14684017
Trailer Example
http://www.youtube.com/watch?v=nfRWrwA9XbY