A tweet by Infinity Ward's Robert Bowling says "DLC is planned fir the wonderfully vague timeframe of Spring. I'll let you know when we know when it'll be done."
Yes, that is fir not for... but nonetheless players are already wildly speculating about what the DLC will contain.
You can discuss Modern Warfare 2 and give us your opinions on the proposed DLC here.
(Originally written for Game-Debate)