Firmware files of an unnamed Huawei flagship device, which we expect to be the Huawei P11, has revealed details pointing towards the presence of a notch at the top of the display, much like what we've seen on the Essential PH-1 and iPhone X.
https://www.notebookcheck.net/The-Huawei-P11-will-adopt-the-iPhone-X-s-notch.269568.0.html