A dissection of MIUI 12.5 beta build reveals that Xiaomi is working on two new phones supporting 67W wireless charging. The two phones in question are codenamed "star" and "mars". Evidence suggests that one of them is likely the still unannounced Mi 11 Pro but the other one remains a mystery. Could this be a Mi 11 Ultra? One thing is for sure, though, these phones are somehow related to each other as the model names end in K1 and K1A. It could also mean that these are the same phone but designated for different regions. Additionally, "star" will surely be running Qualcomm's Snapdragon...
Source: https://www.gsmarena.com/xiaomi_working_on_two_phones_supporting_67w_wireles_charging-news-47441.php