Users of the ZTE Axon 7 in China are currently receiving updates to the company's MiFavor 5.2 skin, an OTA that also doubles up as a boost over to Android Oreo 8.0.
https://www.notebookcheck.net/The-ZTE-Axon-7-receives-its-Oreo-update-in-the-guise-of-an-MiFavor-5-2-OTA.281796.0.html