This info comes from a MIUI Forum Admin who – in a recent discussion with forum members- confirmed that the MIUI 9 development is almost done and well in schedule to be released before August 19.
The Admin was identified as “Mushroom bread” and mentioned that all MIUI engineers have been working intensively for more than a month and everything goes as planned. However he disclosed that the Xiaomi Mi 6 flagship will be the first to get a taste of the new MIUI, as the first batch of the ROM will only support this device. Support for other Xiaomi models will be available later on – according to what he said.
We have no info on when -precisely- we’re going to see this update poppin up on our phones, but it should be here by the end of this month or early next month, bringing along several bug fixes, and improvements such as screen recorder, split screen, and Picture-in-Picture mode.