In a community forum post, Xiaomi announced the start of its beta testing program for Android 12 on some of its flagship devices, namely the Mi 11, Mi 11 Ultra and Mi 11i. This is for the global version of Xiaomi’s MIUI, though, keep in mind.
The company is recruiting a limited number of users to participate in the testing of the Global Stable ROM and the seats are limited to 200 for each device so you better hurry. You will find a detailed instructions of how to apply and install the ROM at the source link below.
Keep in mind that Xiaomi’s staff expects you to be active on its Telegram channel where bugs and issues will be discussed. If all goes well, we can expect the actual stable release of the software to arrive in the following weeks.