Working next-gen iPhone reportedly spotted with payment support built-in (update: video)

We've seen way, way too many leaks of the next iPhone's design, but none of them have shown a truly functional device -- until today, apparently. With the help of cnBeta, Chinese leaker zzray has posted photos and video that reportedly show off a fully functional 4.7-inch iPhone. On the surface, it's exactly what you'd expect: it's the iPhone 5s on a grander scale, with more real estate for icons and other content.

Look closely, however, and you'll see hints of something more under the hood. Notice that new Passbook icon? A new stripe in the icon shows a credit card, supporting claims that the new iPhone will include a mobile payment system (and thus NFC). It's hard to say for sure that this is exactly what you'll see when Tim Cook and crew take to the stage on September 9th -- this could still be pre-production hardware or an extraordinarily clever knockoff -- but it at least seems to represent the real deal.

Update: Chinese YouTube channel PhoneEvaluation has posted a longer video (below) claiming to have the first pre-release look at the new iPhone. It's tough to know if there's any legitimacy to the clip, although they do appear to walk through a Touch ID sign-on, the camera and other features. It doesn't dive into Passbook, however; even if this is authentic, we're not getting a peek at any payment features just yet.