ZTE has already strongly indicated that its impending Axon 40 will be its third-gen under-display camera (UDC) smartphone. Now, an image that allegedly offers a better close-up of the front panel in question might confirm this state of affairs, and also hints at upgrades over the device's predecessor.
https://www.notebookcheck.net/The-upcoming-Axon-40-and-its-improved-UDC-display-allegedly-star-in-a-new-in-the-wild-leak.615835.0.html