It'll be Black Friday, at the latest, because, while I'm very eager to buy a PS4, I'm also cheap. It'll be cheapest on Black Friday, and I doubt I'd be able to wait much longer than that. I'm about to have a lot of disposable income, anyway.
Hopefully The Division won't be out for quite some time. That's the one I'm most excited for, and I don't want to get a late start on it.