Don't know if this has been posted or not, tell me if it has, but someone sent me this link. I don't think this is from the hijacked copy (no french), so I think its cool to post it. Game looks sweet, that only thing is that they upgraded the assault rifle, but it looks like the sub-machine gun is the standard weapon.
Quicktime:
http://www.gametrailers.com/gt_vault/t_halo2_mlg.html
Media Player:
http://www.gametrailers.com/gt_vault/t_halo2_mlg_w.html