Microsoft has released the prerelease version of the Windows Software Development Kit (SDK) for Windows 10 contains headers, libraries, and tools you can use when you create apps that run on Windows operating systems. With this pre-release version of the Windows SDK, you can begin building Universal Windows apps and desktop apps for Windows 10.
This SDK also supports building Windows apps and desktop applications for Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows Server 2012, Windows Server 2008 R2, and Windows Server 2008.
This is pre-release software. You cannot use this software to produce production code.