User blog comment:Damac1214/LEAK: Black Ops II DLC 3 and 4 release dates revealed/@comment-3228520-20130519182150/@comment-5235158-20130521214115

Xbox gets it. A month later PS3 and PC get it. A month later the next one is revealed, although it is leaked a week before. Then Xbox gets it about 4-5 days later, and PS3 and PC get it a month later. That's how it goes.