The Xiaomi 12 Ultra might have been expected to launch by the end of March 2022, going by the rumored super-flagship phone's predecessor, not to mention the frequency of leaks surrounding the supposed device. However, according to a legendary tipster, it is in fact at a relatively early stage in development and may not make it to the market until later in 2022.
https://www.notebookcheck.net/The-Xiaomi-12-Ultra-will-launch-in-April-2022-at-the-earliest.607923.0.html
"super-flagship phone's predecessor"
Wow! That is when I had stopped reading. What's "super" about it? (a 4k display? Nope. Its own powerful SoC that beats Apple/Qualcomm? Nope. Great software? Nope. etc.) It has nothing "super" in it that every other flagship Android 2022 (95%+) doesn't have except a perk or two.