Developer Infinity Ward has stated that the first Modern Warfare 3 DLC will be available on January 24, 2012. That's if you're a CoD Elite and Xbox Live member.
Infinity Ward's Robert Bowling stated that, "The way we're doing downloadable content this year is unlike we've never done before.
"Not only in how you can get it - in content drops or choose for the collection - but also the type of content you're getting. We're doing more than just maps. We're going to do Spec Ops missions and a variety of things that players have never seen before.
"That's the great thing about having three developers that are contributing to the season of content. You have Infinity Ward, Sledgehammer and Raven all pitching in. The full season of content for Modern Warfare 3 kicks off for Elite subscribers on January 24 on Xbox Live."