Windows 8.1 build 9319

Windows 8.1 build 9319 is a build of Windows 8.1. It was mentioned before any Windows 8.1 builds or releases, but it was later confirmed by WinJS using the proper Windows Store GUID on 14 December 2013 by BetaWiki founder JaGoTu. Several screenshots of this build were also shared by the Chinese website Win8China. This is the earliest known build to update the kernel version to 6.3.