Xiaomi is the number one smartphone manufacturer in China, and has been for quite some time now. This company has introduced their new Mi 5 flagship during the Mobile World Congress (MWC) in China last, and that handset comes with Android 6.0 Marshmallow out of the box. Now, on top of Android, you'll find Xiaomi's proprietary MIUI OS, which is essentially their Android skin. MIUI is quite different than Android, there's not app drawer to be found, and the overall design of UI is different as well.
That being said, Xiaomi has unveiled MIUI 7 back in October last year, when they started seeding both Chinese and International version of this OS. A couple of months later, Xiaomi has introduced MIUI 7.1, and has started pushing that variant of the OS to devices two months ago, in January. Well, time has come for MIUI 7.2 it seems, the company has introduced the all-new version of MIUI on their official website. The MIUI 7.2 is actually on its way to Chinese variants of Xiaomi MI 5, Mi 4S, MI Note Pro, Mi 4c, Mi Pad, Redmi Note 4G (Single SIM) and Redmi 1S. Xiaomi has also said that more devices will start getting this update on March 9th: Xiaomi Mi Note, Mi 3, Mi 4, MI 4i, MI 2/2S, MI Pad 2, Redmi 3, Redmi Note 3, Redmi Note 2, Redmi Note 4G (Dual SIM), Redmi Note 3G, Redmi 2A and Redmi 2. So, what about international models? Well, as it's usually the case, international ROM will follow really soon, as Xiaomi said on their official website.
So, what's new in MIUI 7.2? Well, not a whole lot, but Xiaomi did alter some things. As far as Permissions Manager goes, the company has included a new option, you now have the option to manage permissions for creating home screen shortcuts. The proprietary File Explorer received some fixes, optimizations and a new feature as well. You can now double tap the top bar in order to scroll to the very top of your File Explorer feed. Data Usage fixes have also been implemented here, in addition to some general optimizations and what not. The MIUI 7.2 is basically a patch for MIUI 7.1, as it further optimizes the OS. The OTA update should be coming to your device (if you own one from the list above), presuming it's a Chinese variant of it, if not, you'll have to wait until March 8th comes around. Now, if you don't want to wait for the OTA update to come your way, you can manually flash MIUI 7.2 on your phone, even though we wouldn't recommend that if you don't know what you're doing. Either way, you can find links on Xiaomi's official website (source link down below).