Xiaomi has announced on its official forum that it will release MIUI 7 on August 13.
“Xiaomi new product launch event is coming on Aug 13, 2015! And it’s confirmed, MIUI 7 will be released!” says a post on its forum. The official unveiling will take place at the China National Convention Centre.
Although the company is being quiet about new features, we can assume that MIUI 7 will be based on Android 5.1.1 Lollipop.
Xiaomi’s current operating system, MIUI 6, is based on Android 5.0.