Windows 8.1 build 9319

Windows 8.1 build 9319 is the earliest build of Windows 8.1 that screenshots are available for. It was mentioned before any Windows 8.1 leaks or releases, but it was later confirmed by WinJS using the proper Windows Store GUID on 2013-12-14 by JaGoTu.

Trivia

 * The supposed "fbl_eeap" iso has the same date & time as the regular winmain. This implies that it was only a rename rather than a recompile.