Multiple new entries for the same device - a 'blackshark AAA' - have appeared on the Geekbench 4.3 database. They are all powered by the same SoC, which is likely to be the Snapdragon 855. Interestingly, all but 2 of the 10 listings specify 12GB of RAM.
https://www.notebookcheck.net/New-Snapdragon-855-powered-devices-show-up-on-Geekbench-all-of-which-could-be-the-next-Xiaomi-Black-Shark.413704.0.html