Just a quick reminder...
Battle L.A. released on video, uh, I mean DVD and Blu-ray today, and if you happen to pick up specially marked Blu-ray copies of the sci-fi flick, you'll also get a 30-minute demo of Resistance 3. The level is the riverboat level which was previously shown, and from the looks of it, it's nothing that fans should ignore playing.
You can pick up Battle L.A. practically everywhere today!