As shown in the figure, the interface of MIUI 9 version 8.5.11 has undergone great changes. It uses a lot of Android P design elements.
The first is notification, using the same card-style design as Android P. Then the progress bar of the volume panel is changed to vertical, and finally the multitasking interface. It becomes the '2×2' arrangement.
Currently the XDA Forum has released the download address of the ROM. The Millet MIX 2S can experience early adopters. It is worth mentioning that this is a test version, an unstable version, and there may be bugs.