As previewed at E3 LucasArts will release a new SW title exclusively on Xbox 360 for use with the new Kinnect motion system. (formerly known as Project Natal). There was no title for the game given and unfortunately I can't find a video of just that preview, but the showed a Jedi battling stormtroopers with a lightsaber and Force powers in what looked like Theed and at the end of the preview the Jedi crosses blades with Darth Vader.
*edit* found the video:
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