[...] becomes not only the sixth Blizzard product to sell 1 million copies, but also to reach #1 in U.S. sales. The expansion, which shipped on June 29, is topping most PC sales charts in North America, Europe and Asia. In its first week alone, the game captured a record 17.7 % percent of total U.S. PC game market share, also according to NPD INTELECT*. [snip]

Yea.. see that bolded June 29? The thing has sold 1million copies in under a month. EEEeeeeeaaayyeee