We already know that the Xiaomi Mi Max - which is said to sport a mammoth 6.4-inch FullHD display - will be unveiled on May 10. However, turns out that Xiaomi will make a couple of more announcements that day - the company has confirmed that the next major iteration of its MIUI ROM as well as the Mi Band 2 will also be unveiled on May 10. "Evolving from the first version in 2010, MIUI has served as the operating system for over 150 million across the globe," a post on MIUI forum said. "On May 10, we will introduce you MIUI 8, with the features you always wanted and new designs beyond...
Source: http://www.gsmarena.com/miui_8_to_arrive_alongside_mi_max_on_may_10_xiaomi_confirms-news-17952.php