[IMPORTANT — Before you update to VS 2015 Update 1, check out this article]
Now that TH2 has been out for a couple of weeks, the Version 1511 update of the Windows Driver Kit 10 has been released. Note that this new WDK requires you to use Visual Studio 2015 Update 1, which was also just recently released.
The official MSFT page on VS 2015 Update 1 and WDK 10 Version 1511, with download pointers, can be found here.
There’s also a new version of the WDK being introduced: The Enterprise WDK. This WDK is distributed as a ZIP archive that expands to a series of flat files contains everything you need to build Windows drivers in a command line environment. The Enterprise WDK includes the compiler, linker, headers and libraries, but it does not include is an IDE. The Enterprise WDK doesn’t require an installation procedure, so it can be easily copied anywhere and even checked-in to your souce code control system.
You can find information about the Windows Enterprise WDK 10 at this location.
The new version information: