Microsoft already allows developers to use programming languages like C#, C++, Visual Basic, JavaScript, Python and Node.js for targeting Windows 10 IoT Core. Now, they have added support for Arduino Wiring on Windows IoT Core. With Windows 10 IoT Core, developers can now create or port Arduino Wiring sketches that will run on supported IoT Core devices, including Raspberry Pi 2, 3 and Miowboard Max. On an IoT Core device, Arduino Wiring sketch runs as a background application with no UI visible on an attached monitor just like ruing a sketch on an Arduino device such as the Arduino Uno for example.
More information on creating/porting Arduino Wiring apps ruing on Windows 10 IoT Core will be available here.