91Mobiles claims to have heard from a "trusted source" that the next-gen Huawei Nova will be a 5G device. Furthermore, it will have a dual selfie camera that is visible through the display, as with that of the Samsung Galaxy S10+. This putative phone may be released in December 2019.
https://www.notebookcheck.net/Huawei-Nova-6-new-leaks-point-to-5G-and-dual-punch-hole-selfie-camera.440910.0.html