The information came via a Reddit Ask Me About Anything session with Panos Panay who is a Corporate Vice President at Microsoft and works on the Surface Pro Engineering Team. Reddit user Nygmatic asked, "For the Surface Pro....is the boot loader unlocked? Can I do what I want with my (potential) property? Or am I locked in to Windows 8?" Panay cleared up any concerns saying:
So, there you have it. Windows RT and Windows Phone may still be locked down, but Windows 8 tablets will work just like any other Windows device, meaning you could turn off secure boot and load up Ubuntu anytime you want.