There have been rumors of an upcoming Xiaomi Mi 10 Pro+ and new information appears to have given the first solid clue as to when the phone will be released. Supposedly, the phone will be launched next month and will be placed and priced above the Mi 10 Pro.
https://www.notebookcheck.net/Upcoming-Xiaomi-Mi-10-Pro-potentially-set-for-August-launch.483021.0.html