This is a detailed preview of the next major release of Windows, code-named "Windows 8". From the chipset to the user experience, Windows 8 brings a new range of capabilities without compromise.
Windows 8 is designed to be the first Windows client to support systems on a chip (SoC) architectures, including ARM, and since it will be pre-installed on a range of next generation devices, it will also feature Metro, a NUI + GUI interface on the surface combined with a new application platform under-the-hood designed to enable the creation of immersive experiences.
The latest iteration of Microsoft's operating system brings an innovative new platform and tools to developers. Windows 8 apps can use a broad set of new libraries and controls, designed for fluid interaction and seamless connectivity. Apps can add new capabilities to Windows and to other apps, connecting with one another through the new interface.
NOTE: The product keys for using the Release Preview are available here