Modern Warfare 2 'Stimulus Package' is official

New multiplayer maps hit Xbox Live on March 30, Activision confirms

The Modern Warfare 2 'Stimulus Package' - the first DLC for Infinity Ward's behemoth shooter - is official.

The multiplayer map pack will launch "worldwide" on Xbox Live on Tuesday, March 30, the publisher's just announced.

As has been understood, the pack will release first on Xbox Live, followed later by PlayStation 3 and PC, the publisher's said.

There are no more official details on the maps contained within Stimulus, though a leak suggests it'll include five maps, new and old.

Additionally, Xbox Live silver members will be able to try out Modern Warfare 2 online for free via a Multiplayer Unlock event, running from March 12 to 15.