I quote Robert Bowlings Twitter account:
…annnd we JUST hit 25 MILLION unique players on Modern Warfare 2. Insanity! Also, got a lot of#MW2 DLC details coming this week! FINALLY!
Follow Robert Bowling on Twitter: @fourzerotwo. Just wanted to let you all know!
Update: there’s also speculation that along with the introduction of the DLC there will be a double-XP weekend (where you will get double the XP in the online multiplayer).
Big update
The DLC is coming March 30th for Xbox360 and later (April) for PC/PS3!
Bigger update
Robert Bowling gave some details about the coming mappack. It will, like was speculated, contain Crash and Overgrown from CoD4 and there will be three new maps. And the Hardcore playlist will finally be fixed (some modes like HC HQ were missing Terminal, Highrise, Skidrow and Invasion). Mappack will cost 1200 Microsoft points or 14,99, which is, if you ask me, quite steep. But it’s a popular game and yeah, we’re all gonna buy in in the end.