Xiaomi will be at the Mobile World Congress in Barcelona and probably present the Mi Mix 3 again. However, this won't be the regular 4G version, but a special 5G edition with Qualcomm's X50 modem.
https://www.notebookcheck.net/Xiaomi-to-present-the-Mi-Mix-3-5G-at-the-World-Mobile-Congress.396536.0.html