Xiaomi regularly gives updated beta version through their MIUI community. This time they have released beta version of MiSetting App in MIUI community. The app is having bunch of updated interface that looks much impressive than MIUI 11. So, it is expected that this app may be a part of MIUI 12. The post is now deleted from MIUI community.
Before the post disappears, the XDA developers captured the updated User interface. Here are the images comparing the latest UI with the previous UI of MIUI 11. On the left side you will see MIUI 11 UI and on the right side you will see MIUI 12 UI.
The refresh rate setting is now looks more comfortable than the previous one. Along with the refresh rate option, there is a short description associated to both the refresh rate.
The new screen time settings shows a new graph style for weekly usage. In the advance settings UI we get gray background around the color gamut options. This is a very early stage of MIUI 12, there may be more changes till the final release. We will get more updates on MIUI 12 in upcoming months.