Not likely, in the past few years, it's been as late as August 3rd. I've been expecting either the last week of July or the first week of August all along.
But honestly, the release date isn't the important thing, it's the dates offered. I've always said that leaks only settle nerves, nothing more. No leak in history saves people money (though some say they did), it's the promo that Disney offers that saves them money. Even without a leak, they would still release the promo at the same time and everyone would save money, all the leak does is frantically tie up phone lines on the first few hours that morning as everyone somehow thinks it will sell out. In fact, there are still plenty of rooms available for the september
free dining. Sure, a room type, or possibly a resort may sell out, but most do not. I believe the only ones sold out so far are Art of Animation and French Quarter, and only because one is so new and the other is so small.
Let's focus on offering dates, which look pretty solid...and that should keep everyone on target to call and book as soon as it's available.