Xiaomi's official 'Longxia' microkernel initiative has expanded its closed beta test to encompass four additional models, notably the Xiaomi 15 Ultra. This expansion brings the total number of models participating in the closed beta to 12, with participation strictly limited to designated models. The primary objective of this project is to delve into cutting-edge technologies and consistently refine elements such as system stability. Presently, the test is confined to a select group of tech aficionados and geek users for small-scale evaluation.

Given the potential for execution challenges with certain highly intricate tasks, it is advised that regular users refrain from upgrading their primary devices to this version. The application procedure for the closed beta incorporates an invitation code system. Xiaomi officially recommends that test participants back up their data and carry out tests within a controlled setting. Users who are granted access to the closed beta will be required to upgrade their devices upon receiving a push notification for a specific system version before they can commence using it.