This mockup of a case suggests that Apple might be working on a successor to the iPhone 5c, the cheaper iPhone that supposedly flopped.
On display at the Hong Kong Electronics Fair, the case appears to be designed for a large-screen iPhone. But that phone does not appear to be the iPhone 6, which is all but officially confirmed to be bigger than current models. The Hong Kong case has a slot on the back only for a single camera flash, suggesting that it’s designed for a successor to the iPhone 5c, which is equipped with a single flash. The iPhone 5s has a double flash.