Take a look at this picture. It might be iPhone 5. Very blurry but it seems to be (again) hidden some casing. Anyway, the story is a tipster saw this phone while on the way home.
He assumed that the person carrying it is from Apple and as he already own a 3Gs and iPhone 4, he knows that the device is something he had never see before. You believe this is iPhone 5?
For me, it is too blurry to conclude anything. Based on the tipster, it seems thinner and wider than the current iPhone 4.