Regarding version 20.4.27, I found the icons very beautiful.
-About the quick access menu (old notification bar)
Now, the notifications of the quick access menu have been divided, the notifications are on the upper left side and the quick access menu on the upper right side (I didn’t like the fact that I didn’t have the option to go back to the traditional mode where the notifications and the menu were together).
I didn't find it interesting that I couldn't rearrange the position of some icons like wifi and mobile data.
-About dark mode - some applications are still incompatible, facebook is an example, in short, it is not perfect yet.
I was able to test little of the new miui 12 because I didn't have access to google apps where I saved my backups
-these are still missing translations from Chinese to other languages like English in some system applications
-Xiaomi mi cloud did not work very well with some applications, miui's Notes app for example did not save notes, in addition to others, so if you are going to update do not fully rely on mi cloud backup
Sent from Redmi note 7 lavender