With MIUI 12 rumoured to be available from MIUI 12, Xiaomi has decided to push another Android 9.0 Pie-based update to the Mi Note 10 and Mi Note 10 Pro. While Xiaomi has pledged to update the CC9 Pro to Android 10 by the end of this month, the arrival of the latest update for EU handsets all but ends hopes that they were in line for the same treatment.
https://www.notebookcheck.net/Xiaomi-rolls-out-another-Android-9-0-Pie-update-to-the-Mi-Note-10-and-Mi-Note-10-Pro-just-days-before-it-makes-MIUI-12-available.462633.0.html
Miui 12 won't be available from monday. Is just the announcement of the new iteration with all bells and whistles.