I just got news from Activision Towers regarding the PlayStation 3 and PC release date of the currently Xbox 360 exclusive Call of Duty: Modern Warfare 2 Stimulus Package. The brand new maps will release in North America on Tuesday, May 4th and in Australia and the European Union on Wednesday, May 5th. The PC version will be available worldwide on Tuesday, May 4th.
No price has been revealed yet but it should be around the ($15.00/£10.00) mark.