The Xiaomi Mi Mix is the next handset to get the MIUI 9 update.
The 2016 flagship has started receiving an official MIUI V18.104.22.168.NAHCNEI Stable Nightly build.
Changelog for the new update
MIUI 9 is based on Android 7.0 Nougat and brings lots of meaningful features – home screen assistant, Split Screen mode for apps, animated app icons on the homescreen and more – for the full list refer to the screenshots above.
Yesterday Xiaomi released the MIUI 9 update for the Xiaomi Mi 5 and Mi 5s Plus.
Thanks for the tip, Kevin!