Windows 8 unidentified December 2011 build

Windows 8 build 817? (the last digit is unknown) is a Beta Escrow build of Windows 8. Three screenshots was shown of this build by WinUnleaked.tk. Unlike other builds that weren't publicly released officially by Microsoft, this build does come with Metro apps (PaintPlay alone was brought back from build 8102.101). The Aero Lite (Windows Basic) theme has been updated.