It sounds like non-embedded Windows may end up being available for platforms outside Intel again. Long ago, Microsoft Windows NT supported MIPS, Alpha, PowerPC, Itanium, as well as x86/x64. Embedded Windows supported many other processors, including ARM. And Microsoft already has ARM-based Surface devices, and Windows 10 for ARM-based RPI2.
https://msdn.microsoft.com/en-us/windows/hardware/dn940797%28v=vs.85%29.aspx
http://www.ubergizmo.com/2016/01/microsoft-might-be-developing-windows-10-for-arm-based-processors/
http://www.windowscentral.com/desktop-version-windows-10-arm-based-chips-might-be-development
Firmware Security 