The images were provided to 9to5Mac by Sonny Dickson. The glass back is said to facilitate the upcoming 'wireless' charging feature of Apple's next generation devices.
Besides the addition of wireless charging, the iPhone 7s and iPhone 7s Plus are expected to gain faster A11 processors and perhaps a increase in base storage to 64GB. Apple could also include some camera improvements which would assist with the AR features in iOS 11.
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