After the regular Xiaomi 12 series, it looks likely that Xiaomi has the Xiaomi 12S lineup in store. One of the phones to be launched appears to be branded as the Xiaomi 12S Pro, and could be powered by a MediaTek Dimensity 9000.
https://www.notebookcheck.net/Xiaomi-12S-Pro-appears-with-a-MediaTek-Dimensity-9000-onboard.617719.0.html