Here is the phone that they will be using.
<a href="http://www.windowscentral.com/more-details-emerge-how-xiaomi-windows-10-preview-will-be-distributed" rel="nofollow">http://www.windowscentral.com/more-details-emerge-how-xiaomi...</a>
Microsoft should have done this much earlier. Releasing the ROM will allow who ever wants to have an operating system different than Android. They can make profit from their own "marketplace"