iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.
Apple Tablet Likely to Include Front Facing Camera?
This person said Apple has experimented with the ability ... for the gadget to automatically recognize individuals via a built-in camera.While the presence of a front facing camera could allow for this novel use of facial recognition, it would also open up the possibility for video conferencing, which has been a long requested feature for the iPhone. Apple already supports video conferencing with their Mac OS X iChat software, so the ability to tie in video conferencing with their existing technology would be trivial.
The focus of the tablet rumors has been on content deals and multi-touch, though a camera could introduce other interesting features.