According to backtrack twitter post backtrack development team will be releasing backtrack 5 R3 version on 13 august with many bugfixes and addition of 50 new tools .
BackTrack 5 R3 preview available in BlackHat / Defcon 2012. Official release on Aug 13th. backtrack-linux.org/backtrack/back…
— muts (@backtracklinux) July 25, 2012