The same source also states that the winrc branch is kept in lockstep with the winmain branch: The latest builds in the series are Windows 7 Build 7082 ,Windows 7 Build 7083 , Windows 7 Build 7084 and Windows 7 Build 7085. The Build string of Windows 7 Build 7082 is 61.7082.0.winmain_win7rc.090410-1901, of WIndows 7 Build 7083 is 6.1.7083.0.winmain_win7rc.090413-1900 and of Windows 7 Build 7084 is 6.1.7084.0.winmain_win7rc.090414-1900 .The Build string of 7085 is not completely known - 6.1.7085.0.winmain_win7rc.090415-19hh