The Xiaomi Mi Mix 3 now has an upgrade to MIUI 11, the Chinese company's version of Android 10. The update brings plenty of new features including improved screen casting, a system-wide dark mode and a new gesture mode. Mi Mix 3 owners can download the build now.
https://www.notebookcheck.net/Xiaomi-releases-a-beta-MIUI-11-update-to-Android-10-for-the-Mi-Mix-3.440314.0.html