The Redmi K20 series will get a 2nd generation, according to the brand's general manager. Furthermore, it will also get 5G. It is not clear if this will apply to all variants of the K30, or just one of them.
https://www.notebookcheck.net/Redmi-confirms-there-will-be-a-K30-and-that-it-will-have-5G.433036.0.html