User blog comment:Rampantlion513/BattleNews: May 31, 2012/@comment-1778809-20120603201936/@comment-1899678-20120603212031

The patch releases the same day as CQ. In Asia, both the patch and CQ come out on the 5th. Everywhere else, it comes out on the 4th. Unless of course you are on XBOX or PC.