Xiaomi started pushing its latest installment of the MIUI custom overlay and the first one to get it is last year's Mi 6 but users in China have reported that the Mi 8 SE and the Mi MIx 2 are also getting the much-needed OS update. But don't get too excited as the MIUI 10 stable ROM is currently available only in China and it's been rolling out gradually and randomly. The build numbers are 10.0.1.0.OEBCNFH and 10.0.0.1.0.ODECNFH for the Mi 8 SE and the Mi Mix 2, respectively. Interestingly, the former's update weighs in only at 930MB while the latter is receiving an even smaller patch...
Source: https://www.gsmarena.com/stable_miui_10_is_currently_rolling_out_for_xiaomi_mi_8_se_and_mi_mix_2-news-33003.php
