Okay, we know Apple is set to introduce the next iPhone on October 4, but a leak from a major iPhone case manufacturer seems to imply that we'll be seeing a slight upgrade to the iPhone 4, and that it'll be called the iPhone 4S. It's definitely not a typo, as the case itself has the volume buttons moved to the right side of the iPhone 4S, right above the SIM card slot. As we reported earlier today, Al Gore let it slip that Apple would be releasing new iPhones, plural, in October. Could we see both an iPhone 5 and an iPhone 4S?

We've got a larger image of the case after the jump.