You see that large '5' beneath the number 12? Yeah, Apple isn't even trying to be coy anymore. Apple just sent out invitations for a media event on September 12 with the above graphic, presumably for the long-awaited launch of the iPhone 5. We've already seen enough of the next generation iPhone, now it's Apple's time to talk about it.
This event is one of the two launches Apple is expected to hold this Fall. Rumour has it there's another event planned in October for the iPad Mini.