We'll know for certain if this video is legitimate in on September 12th.
That's when Apple will reveal the iPhone 5 to the world, but by all accounts this video looks accurate, and certainly concurs we've everything we've heard about the handset so far.
Neowin reports that the prototype that's pictured comes direct from the production line and, for sake of comparison, is shown next to an iPhone 4S.
Things to look out for include the new smaller cable port, the altered physical home button and, of course, the longer, larger screen.
Here's the video: