Windows 10 will be supporting the hardware for its compatibility with the smart objects, popularly known as the’Internet of Things. Windows 10 IoT Core operating system does not have a Windows shell experience; rather you can write a Universal Windows app that is the interface and ‘personality’ for your device. Apps are loaded onto the Raspberry Pi from a Windows 10 desktop machine. Apps can be developed using a range of languages, such as C# or Visual Basic with XAML, C++ with DirectX and Extensible Application Markup Language (XAML)
Source: https://thehackernews.com/2015/08/download-free-windows-10.html