From the picture, we can see that the rear camera will be placed on the top left of the phone, where it has been. The side of the device appears to be metallic. The photo was found on a Weibo site out of China, and the posting mentions "Type-C" which could refer to a USB-C port. This will allow users to plug in a USB-C connector with either side of the plug facing up. The posting also shows the number "9" which could refer to a September unveiling for the phone.
Other rumored specs include a 1440 x 2560 resolution screen, a Snapdragon 820 chipset with 4GB of RAM inside, an improved rear camera (although still not equipped with OIS), the Qualcomm Sense ID fingerprint scanner, and a new design. The latter doesn't look terribly apparent from the leaked photo, but then again it is hard to judge when looking at a picture snapped by Mr. Blurrycam.
source: Weibo via mobilissimo.ro (translated), GSMDome