Day 1 Studios, the developers of MechAssault have partnered up with LucasArts to produce an original product for the next gen consoles, including the Xbox 360 of course.
No real details have been released yet, but people are already speculating that the game will be another robot/mech-centric game. The Xbox developer is also handling the 360 port of PC shooter F.E.A.R, due in November.