Microsoft Windows 10 SDK Preview Build 15063 and Mobile emulator build 15063 is now available for download. The latest SDK contains bug fixes and under development changes to the API surface area.
You will require Visual Studio 2017 Preview for Build 15063 SDK and Windows 10 Insider Build 15063 to work. You can also download the Visual Studio 2017 from here.
Microsoft also released Windows 10 PC insider preview build 15063 and Mobile Insider Preview build 10.0.15063.0 for Fast Ring members.