A new leak has confirmed that Xiaomi will be releasing two versions of the Mi TV Stick. Confirmed to be FHD and 4K models, the Mi TV Stick will start at US$49.99 and will start shipping at the end of next month. Both versions will run Android TV 9.0 and will support voice controls via Google Assistant out of the box.
https://www.notebookcheck.net/New-Xiaomi-Mi-TV-Stick-leak-confirms-FHD-and-4K-models.477054.0.html