7th January 2010 - Microsoft's CES 2010 Press Conference is currently on and they have just announced that there will be exclusive downloadable content coming to the Xbox 360 for the biggest hit of 2009, Call of Duty: Modern Warfare 2. This is a big announcement and it will be interesting to see if and when this content will see the light of day on the Playstation 3.
Update: Activision have confirmed that the DLC is a timed exclusive.