Once you get a certain amount of kills, you have the option to play as a Jedi/Sith for about a minute or so. There are new character classes such as medics and covert ops.
It looks like this is the one guys. The ability to get in and out of spacecraft? Awesome stuff.
It will be available for PC, Xbox, POS2, and PSP. Not sure if an XB360 version is in the works.
I didn't know that Battlefront I is the best selling Star Wars game of all time, until I read it today...
Maybe I'll post my impressions here later once I've played the demo.