Xiaomi company began sending out a stable version of the firmware MIUI 9.5. It includes new features that were originally supposed to appear in MIUI 9. Among the changes is an updated notification centre and quick responses to messages.
MIUI 9.5 also includes new ringtones, as well as the sounds of connecting the charger and locking / unlocking the smartphone.
At the moment it is known that the update is available on Redmi Note 4. True, this is a “night” build, released to a small number of users before a full release.