Details of the Xiaomi 12 series are mostly unconfirmed with the exception of Xiaomi's marketed display specifications. A new leak from China purports to lay the vanilla Xiaomi 12 bare, though, by revealing its specs and pricing ahead of launch.
https://www.notebookcheck.net/Xiaomi-12-Leak-purports-to-reveal-major-specs-and-pricing-details-of-the-upcoming-Xiaomi-flagship.588457.0.html