situations like this, where the Xbox 360 "exclusive" Modern Warfare 2 DLC (a five map pack titled "Stimulus Package") is suddenly announced as heading to PlayStation 3 and PC. In fairness, as detailed by Microsoft to Eurogamer back in January, we already knew this particular exclusivity deal had a built-in expiration date.
What we didn't know, however, was an official release date for the PS3 and PC versions. Infinity Ward community man Robert Bowling revealed the May 4 US release date for PSN via Twitter, also detailing a May 5 release date worldwide for PS3s and May 4 for PCs worldwide. Though he doesn't specify, we have to imagine that pricing will remain in line with the content's $15 tag on XBLM. We've followed up with Bowling for clarity's sake and will let you know the solid pricing details as soon as we hear back.