It seems that Apple is still pondering the intricacies of what will feature in the next iPhone handset launched in 2016, as according to a new report the firm has as many as five different prototypes and is deliberating over which one (or ones) will be pushed forward for further development, and ultimately a release as the next flagship (or flagship variant).
Amongst the claimed features of said protoypes there is talk of a USB Type-C port, which is certainly a surprise considering Apple's love for its own proprietary (and relatively new) Lightning port. It's said this USB Type-C port also supports headsets. Other features include wireless charging, "multi-Force Touch", a dual-camera, and a return of the previously rumoured under-display fingerprint scanner; which many pre-launch rumours claimed would arrive in the iPhone 6/iPhone 6s series. Of course, that didn't happen.
It's also reiterated that Apple is testing AMOLED displays, although this isn't believed to be part of the iPhone 7 prototype testing program, as the introduction of AMOLED for iPhone isn't expected to appear in the next-generation and could remain unseen until 2018/2019, so around the iPhone 8/8s or thereabouts.
It's curious that there's no mention of previously rumoured waterproofing or the use of a proprietary headphone jack smaller than the standard 3.5mm version. The info comes via the usually vague Weibo sources in China, so do take it with a pinch or two of the salty stuff.