Xiaomi's MIUI 12 stable update should be rolled out to the second batch of smartphones mentioned in the company's roadmap before the end of July. This news pertains to owners of devices such as the Xiaomi Mi Mix 3, Xiaomi Mi 9 SE, and Redmi Note 7 Pro in China for the moment, although a global rollout can be expected in the near future.
https://www.notebookcheck.net/MIUI-12-stable-update-from-Xiaomi-coming-to-second-batch-smartphones-like-the-Mi-Mix-3-Mi-8-and-Redmi-Note-7-Pro-by-the-end-of-July.482472.0.html