The Xiaomi 12U may replace the Xiaomi 12 Ultra as the top dog in the Xiaomi 12 series. New leaks essentially confirm the existence of such a device and tip it to be powered by a chipset that will likely debut as the Snapdragon 8 Gen 1 Plus. The 12U is expected to have better cameras than the Xiaomi 12 Pro and Xiaomi Mix as well.
https://www.notebookcheck.net/Xiaomi-12U-Potential-Snapdragon-8-Gen-1-Plus-tipped-for-Xiaomi-s-flagship-phone.595478.0.html