You can already install MIUI 12 from Xiaomi.eu on your Xiaomi smartphone, if it is included in the list of supported devices. The software includes Russian, so the option of installing a new update seems tempting - but remember - you do this on your own responsibility.
MIUI 12 was officially introduced by Xiaomi a few days ago.
The list of Xiaomi smartphones on which you can install MIUI 12 is quite significant, since it contains as many as 28 items:
As you can see, in the list we find not only the latest models. For example, MIUI 12 is available for the more than three-year-old Xiaomi Mi 6.
A complete guide to installing MIUI 12 on a Xiaomi smartphone can be found on the Xiaomi.eu website (in English). The Xiaomi Europe portal is not official