The Xiaomi Mi TV Stick appears to be getting closer to an official launch, as details about the gadget have been appearing via Geekbench, Google Play Console, and on official Google certification. It is the 1080p (FHD) Mi TV Stick model that has been spotted recently, although there is evidence of a 4K (UHD) device too.
https://www.notebookcheck.net/Xiaomi-Mi-TV-Stick-Google-certification-Google-Play-Console-presence-and-Geekbench-appearances-indicate-upcoming-launch.479416.0.html