The prolific Apple analyst Ming-Chi Kuo's latest prediction concerning the 2019 iPhones indicate that at least one of them will have triple rear cameras, augmented by an improved wide-angle lens in one module. In addition, the new devices' selfie cameras may be upgraded. On the other hand, they are likely to retain a notch and glass rear panels.
https://www.notebookcheck.net/At-least-one-new-iPhone-will-have-a-super-wide-angle-camera-Ming-Chi-Kuo.418198.0.html