You will have to wait awhile to get some DLC for MW2, because according to Infinity boss Robert Bowling, that won't happen until sometime in "spring."
"DLC is planned for the wonderfully vague time frame of spring. I'll let you know when it'll be done," Robert said through his twitter page.
No details at all were divulged. But rest assured it'll contain some new modes and maps, that's a safe bet.
11/26/09 Ernice Gilbert