The Raspberry Pi 2, which is a more powerful computer than the Pi 1 and has been upgraded with more hardware installed like Broadcom 900MHz quad-core ARM Cortex-A7 processor and 1GB of RAM. With $35 making it a more powerful and the cheapest computer in the world.
From their blog “For the last six months we’ve been working closely with Microsoft to bring the forthcoming Windows 10 to Raspberry Pi 2. Microsoft will have much more to share over the coming months. The Raspberry Pi 2-compatible version of Windows 10 will be available free of charge to makers.”
Lets just wait and see how much functionality compatibility it will have with the windows 10.