May 26th 2006
Auditor Security Collection and Whax merge to create BackTrack
Live CD and live USB capability
March 6th 2007
BackTrack 2
Kernel 2.6.20
Metasploit2 and Metsploit3 support
Redesigned menu structure
June 19th 2008
BackTrack 3
Kernel 2.6.21.5
Saint and Maltego added
January 9th 2010
BackTrack 4
Kernel 2.6.34
Massively improved hardware support
Official FluxBox support
May 10th 2011
BackTrack 5
Based on Ubuntu Lucid LTS
Kernel 2.6.38
March 13th 2013
BackTrack Linux becomes Kali Linux
Support for BackTrack Linux ends
Complete platform rebuild
Based on Debian
Streamlined package updates synced with Debian
