Microsoft has released the Windows 10 SDK version 10.0.16299.15 for Fall Creators Update.
The Windows 10 SDK for Fall Creators Update (10.0.16299.15) provides the latest headers, libraries, metadata, and tools for building Windows 10 apps. When used in conjunction with the latest version of Visual Studio 2017, the Windows 10 SDK provides the optimum experience for building apps for Windows 10.
More information and download:https://developer.microsoft.com/en-us/windows/downloads/windows-10-sdk
The complete SDK will took around 758MB on your disk after download.