Up-to-date rumors point to successors for the Huawei Mate 20 line this year. The latest leak on one variant of this series states that it will have the perfectly square rear camera pioneered last year in this series. It will also have a bigger screen, as well as a time-of-flight (TOF) module.
https://www.notebookcheck.net/New-Huawei-Mate-30-Pro-leak-suggests-it-will-retain-square-camera-get-bigger-screen.420083.0.html