Aha, i was typing up this topic myself. glad I refreshed one last time before submitting. I got an email earlier today from xbox saying the 10th.
Available on January 10th on Xbox Live® Marketplace, Raven Down places you in the desperate aftermath of a helicopter crash, while Old Bones drops you right in the middle of a Locust attack on Sera's Museums. Get right down and fight. Or just sit back awhile and drool over the sick level of detail you've come to expect from Gears of War. Raven Down and Old Bones are brought to you by Discovery Channel's FutureWeapons.