This release supports the new direct memory access bus driver that gives high performance access for GPIO. Additionally, this driver gives you the ability to use “Pin Muxing” rather than the default configuration.
Now have full support for the TX/RX pins on the Raspberry Pi2. Also included an in-box driver for the FTDI USB-to-serial chipset because many devices use that as the interface port for controlling them (for example, Home Automation Systems).
In this release, not only support the official Raspberry Pi Wi-Fi dongle, but also two Realtek Wi-Fi chipsets (RTL8188EU & RTL8192EU).
And it is easier to use existing Arduino Wiring Sketches, libraries, and hardware with Windows 10 IoT Core Universal Windows Apps (UWA). Simply drag-and-drop Arduino Wiring INO and/or library files into Visual Studio, connect hardware to a Windows 10 IoT Core device, and run the code. You'll also be able to mix your Arduino code with other UWA technologies like C# and XAML to get the best of both worlds.
~ Windows IoT Downloads