Are the camera specs of the new phone actually identical to 5 and 5s?
They all have 8MP, 2.2 aperture, 1.5 micron sized pixels. I think they said on the conference that the aperture was bigger but it doesn't seem it is if you compare the specs. They were saying they've improved something but it sounds like the improvements are all actually in software.
the spec is exactly the same, the difference is the sensor.
It allows for phase detection autofocus, the one that DSLR's use which means the autofocus is twice as fast as 5 or 5s
HDR photos is one shot rather than the iPhone taking 3 shots and combining them due to the sensor
6+ has optical image stabilization along with the traditional digital image stabilization which is found in 6 and 5 and 5S
But fast autofocus is not that beneficial to pictures which if you have used 5S is already good, its good when using videos when fast autofocus comes into play where in 5S it would constantly blur the object in and out trying to find the range, here the sensor allows for the object to remain in focus consistently throughout.
The sensor's phase detection also allows MUCH lesser noise in night photography because in the previous modes, it would use the traditional methods of Auto focus but now it could slow the shutter speed without sacrificing quality and performance due to sensor and without increasing the ISO in low light