Just saw on Shacknews that Official Playstation Magazine has a short article about the upcoming Battlefield 1942-inspired Star Wars: Battlefront, which is being developed by Pandemic Studios. Here's a clip:
You can play in the Galactic Civil War or the Clone Wars, meaning you can choose one of four armies to command (Rebels vs. Imperials or Republic vs. Separatists). You can't mix and match sides (e.g., no Republic vs. Empire), but battles can take place on any planet.A bit more information as well as 3 screenshots (and a tiny thumbnail of what may be early box or promo art) can be found here. OPM promises more information about Battlefront in the next issue of the magazine.
As for the vehicles, Battlefront includes pretty much every major ride you've seen in a Star Wars flick. Yes, even AT-ATs. Yes, even X-wings. Hell, you can even mount a tauntaun. Better yet, certain vehicles carry multiple troops: One player drives as the others man guns.