http://en.miui.com/thread-94125-1-1.html
Through a new program with Xiaomi, one of the top smartphone
distributors in the world, a select group of Xiaomi Mi 4 power
users will be invited to help test Windows 10 and contribute to
its future release later this year. These power users will have
the opportunity to download the Windows 10 Technical Preview –
installing it and providing their feedback to Microsoft.
微軟的另一種攻勢.
未來小米 4 將能"升級"成 WP10, 或有可能直接販售預載 WP10 的手機.
微軟會先在小米社群內挑選一些使用者, 協助進行適用及測試.