The Huawei P20 Pro started the triple rear camera revolution last year, and the Mate 20 Pro all but perfected it. Word on the grapevine claims the upcoming P30 Pro will feature four rear cameras, and Huawei could go one step further with the Mate 30 Pro by equipping it with a penta-lens setup.
https://www.notebookcheck.net/The-Huawei-Mate-30-Pro-could-stun-with-five-rear-cameras.390791.0.html
Actually, this is an official case of Mate 20 rendered in gray. The camera and touch id module shared the same square port.