The first downloadable content for Call of Duty: Modern Warfare 2, the "Stimulus Package" map pack released last week, is currently an Xbox 360 exclusive. That exclusivity changes on May 4, Activision's announced, when the same five-stage map pack arrives on both PlayStation 3 and PC.
The "Stimulus Package" map pack contains five maps, two of which were brought over from the original Modern Warfare. The pack has already been downloaded at least 1.5 million times.
There will be at least one more map pack released for Modern Warfare 2, which will also begin its life an Xbox 360 exclusive for Xbox Live users. It will arrive on both platforms a later date.