The new shooter will have a 12MP sensor (or perhaps 13MP with the extra used for digital stabilization) and will record 2160p video.
The new Apple A9 chipset will feature improved ISP for better image processing with hints of a top-notch HDR mode.
The selfie camera, which may get a 5MP sensor.
The iPhone 6s and 6s Plus will be unveiled on September 9. Keep your fingers crossed for 4K being used.