The next build release of Windows 10 SDK Preview is available now. Clint Rutkas just announced via a blog post. This build contains bug fixes and under development changes to the API surface area. With this SDK, new Mobile Emulator Build 15235 is also released.
This SDK will now only be supported by Visual Studio 2017 and greater.
The Preview SDK and Mobile Emulator can be downloaded here:
https://www.microsoft.com/en-us/software-download/windowsinsiderpreviewSDK