Here we have the Xbox 360 release list for the first 2 months of 2010.

Darksiders: Wrath of War            8th of January        buy/pre-order
Bayonetta                                          8th of Janaury      buy/pre-order
Dark Void                                           15th of January  buy/pre-order
Army of Two: The 40th Day       15th of January  
Mass Effect 2                                     29th of January     buy/pre-order
Mass Effect 2 Collectors Edition      29th January
Ben 10 Alien Force Vilgax Atacks   5th of Febuary   buy/pre-order
Dante’s Inferno                                        5th of Febuary   buy/pre-order
MX vs ATV: Reflex                                 5th f Febuary     buy/pre-order
Bioshock 2                                                 9th of Febuary     buy/pre-order
Dynasty Warriors: Strike Force       19th of Febuary  
Aliens vs Predator                                 19th of Febuary   buy/pre-order
Splinter Cell: Conviction                     26th of Febuary   buy/pre-order