Apple plans to include camera modules with more than 12 MP in the iPhone 9 models. The company has already booked the Largan Chinese facility and will roll out the new camera modules that could feature dual or multiple lenses, large apertures, and 3D sensing functions starting October 2017.
https://www.notebookcheck.net/Apple-could-up-the-megapixel-count-and-the-screen-size-for-the-iPhone-9.247020.0.html