As the screenshots reveal, the beta MIUI 10 version is 8.9.7, meaning it is pushed on Friday, September 7. It is meant for early adopters who are willing to live with and report bugs before it releases to the public. According to the source, the UI hasnt changed, but working with the device has become smoother, and problems with the camera app have been fixed.
With the Chinese ROM being in development, we should expect a Global release soon. The MIUI 10 will arrive to 28 different Xiaomi smartphones, but only some of them will also get the latest Android Pie features like Digital Wellbeing, Adaptive Battery, better notification panels and machine learning capabilities.