Yeah, you're quite right PastramiX. I also believe that this trailer is a slight leak, and LucasArts are waiting for a magazine's (possibly Nintendo Power's) exclusive to come out before they release more details. It's a real shame if the 360/PS3 version truly isn't coming out.
I've updated IndyJones.net with all the details, including the Facts & Rumours page for the game.
As for release date, I'm betting on or around April 28th - which is the current rumoured release for the novelisation by Rob McGregor.