We have been constantly posting details about the Windows 8 beta builds, recently it has been posted on the Russian Forum from where all the information about builds have come that another branch has appeared named winmain_win8beta and the latest build compiled in beta branch is 8222 with build string as 8222.0.winmain_win8beta.120131-1912. The build string clearly states that the build was compiled on 31st January 2012.