An alleged internal document posted by a Foxconn employee on Weibo suggests that the next-generation iPhone models may in fact include an upgraded camera at a 12-megapixel resolution capable of recording 4K video, iPhoneArena reports. This latest information seemingly corroborates earlier analyst predictions on a pixel upgrade for the new device, as well as multiple rumors suggesting that the new models will also get an increase to 2GB of RAM. While…