Hugo Barra, the VP of Xiaomi Global, says a project by Microsoft to run a ROM of Windows 10 on the Mi4 smartphone is an "experimental program'.

Barra offered more details on the Xiaomi Mi 4-Windows 10 program, which was announced by Microsoft earlier this week at its WinHEC 2015 hardware conference in China, on his Google+ account. Here is his statement in full:

We received many questions from Mi fans about an announcement made by Microsoft yesterday regarding Windows 10 Technical Preview for Mi 4 users in China. We'd like to clarify a few points.

This is an experimental program led by Microsoft, working directly with the Mi fan community in China.

Microsoft is working on a build of Windows 10 specifically for Mi 4 devices. This Windows 10 build will not be running on top of Android nor be available as a dual-boot option. A small number of Mi 4 power users from the Xiaomi Forum in China who choose to take part in this experimental program will have to manually re-flash their Mi 4 devices with this Windows 10 ROM, in the same way they would re-flash other Android ROMs.

At Xiaomi, we are very supportive of users trying new things and we encourage them to do so all the time! That's why all of our devices ship with unlocked bootloader, for example. That's also why Xiaomi welcomes Microsoft team members to interact directly with members of the Xiaomi Forum in China. More details will be announced by Microsoft in the coming months. This program will only be available in China.

Xiaomi continues to fully embrace the Android ecosystem through our MIUI software platform and we're moving ahead full steam building many exciting new Android-based features and services. 

The Windows 10 ROM for the Xiaomi Mi 4 will be released on the Chinese MIUI forums but so far there's no word on when that will occur.

Source: Hugo Barra (Google+)