Right on schedule, Microsoft has released the latest preview build of the Windows 10 SDK, allowing developers to get a head start on changes coming in the next major version of the operating system, scheduled to launch this Spring.
The new version, build 17069, requires using Visual Studio 2017 and greater, and works in conjunction with previously released SDKs. You can install this SDK and still build apps that target earlier versions of Windows 10.
One known issue is that you need to work around an error that fails when you try to deploy to a mobile device. Here's the workaround:
Go to Administrative Command Prompt
Run REGSVR32 “\Program Files (x86)\Windows Kits\10\bin\10.0.17071.0\x86\SirepClient.dll”
XAML Designer fails to load: When attempting to load the XAML designer, an Unhandled exception occurs “The XAML Designer has excited unexpectedly.
OleView fails to run.
You can learn more about the latest SDK, including the long list of API changes, on the Windows 10 Building Apps blog post.