The Mi7 flagship is expected to hit the market in Q1 2018 and it could also include a rear fingerprint sensor, a 16 MP camera and facial recognition technology.
https://www.notebookcheck.net/Xiaomi-Mi7-to-feature-Snapdragon-845-SoC-6-GB-RAM-and-edge-to-edge-6-inch-OLED-display.266438.0.html