Xiaomi unveiled its MIUI 12 in China in April, followed by a global launch in May. Now, the first set of devices have started receiving the stable beta firmware. This is normally the final stage before the update begins seeding to retail units.
These builds are still not recommended to install on your daily driver as some unexpected bugs may appear, but should be perfectly stable overall. That being said, the new stable build for international users supports multiple languages and Google services. You can also find links to the MIUI 12 stable betas courtesy of the XDA Developers team in the via link below.