Yesterday afternoon, Kotaku reported that Battlefield creators DICE would be releasing the game's first trailer. That trailer, apparently, is already online, supposedly leaking tonight.
Images of the game were revealed in the latest Game Informer. The game has the same visual vibe of Battlefield: Bad Company 2, but with decimated environments. As mentioned previously, GI mentions a few new technical features, including animation techniques borrowed from the EA Sports guys and an "exponential leap in destructibility."
The trailer shows low-qualify video footage of game combat, with radio chatter. The screen goes black after a helicopter is blown to bits, and the game's title, Battlefield 3, flashes on screen. The release date given is (northern hemisphere) fall 2011.
Kotaku is following up with EA to confirm whether this is in fact the new Battlefield 3 trailer.