While the Redmi Note 7 and Redmi Note 8 phones remain stuck on Android Pie, Xiaomi is already sending out a stable Android 10 build to owners of the cheaper Redmi 7A in China. The update is a 1.7 GB download and doubles up as the May security patch.
https://www.notebookcheck.net/Android-10-update-begins-rolling-out-to-the-Redmi-7A.468477.0.html