Gears of War for XBox 360 will have two new free multiplayer maps available through the XBox Live marketplace starting tomorrow, January 10.  Titled Raven Down and Old Bones, the maps will expand upon the existing Gears of War game and provide a new killing zone for fans.  Raven Down is taken from Blackhawk Down and puts you in the middle of a firefight immediately after a helicopter crash in a war zone.  Old Bones dumps you in the middle of a Locust attack on Sera’s Museums.  Again, these maps can be downloaded for free.