The Windows 8 Beta Blog reports that the latest Windows 8 is build 7994

It has been long since we posted about the Windows 8 builds. Today thehotfix forums has posted the screenshot of setup.exe file (courtesy torko) showing the latest Windows 8 build is build 7994. Though this is the latest known build, but according to our sources it was compiled atleast 2 weeks back.

  Windows 8 latest build, build 7994