The only thing known about the iPhone 5, is that it will probably be announced at an event on Sept. 12.
But just because we don't know anything for sure, doesn't mean we can't speculate.
Will it have a bigger screen? NFC capability? 4G LTE connectivity? Will it blend?
It'll be a week until we know for certain, but until then, here are some of the iPhone 5 rumors that are garnering attention.