Other features exposed by MIUI official include the desk dock column which changes its position. The dock bar has been eliminated, leaving only the icon. Also, there have been strong changes in the lock screen interface. The left side of the new lock screen has the Universal Remote Control, Mi-Pay, and Xiaomi Bus while the bottom provides the Flashlight. The new lock screen design is as simple as possible, and you no longer need two or more clicks to complete a function as one step does the job. MIUI official has long exposed the split screen and recording function of MIUI 9 and the fact that these two will come in standard formats. All these features we already know. Today, MIUI official released yet another function of MIUI 9, “Black technology.”
One of the most important functions of MIUI 9 is “Black Technology.” It involves the use of memory anti-debris optimization to control the background memory footprint. The background memory footprint can be maintained in a certain range, and there will also be a dynamic IO resource control technology which can improve the general performance of the operating system. There are just about five days left for the Xiaomi press conference which will be held in The Beijing National Convention Center. Let us keep our fingers crossed and await the official release of this operating system.
Source (Translated from Chinese)