Ok, this is not "official". So just listen for a sec...
Game Store guy said his distributor told him, and I quote "Friday the 25th, so about 2 more weeks. That is if Fantasy Flight doesn't push it back again which they've already done several times. They're really bad about that. It was supposed to be here end of August..but well..sorry! Nothing I can do about it."
While not official, FFG has to give dates to their distributors and seeing as this is how the Games Store owner feeds his family, he should know. Better than me anyway.
I expect this doesn't apply if you ordered online say on Amazon or whatever. I notice that Borders and B&N let them sit in the back room for a couple days before they bother stocking the shelves with them.
So everybody chill. Paint some minis while you're waiting.