Now we have the first interview regarding the Wii version of the new Star Wars game and one screenshot.  The interview also mentions multiplayer lightsaber battles as well.

 

IGN: Is there a multiplayer mode of any kind?

Ken Fox: Yes! We really see multiplayer and the social aspect of this game as a huge part of its potential. We see a scenario much like with sports games where fans will watch a real game on TV and then boot up a video game and replay the match they just watched. We see fans watching the show every week and extending the experience by booting up the Wii game and re-enacting the great lightsaber duel they just saw, then picking their favorite characters and dueling some more.

Read the full interview here