The announcement of the first Firefox ESR (Extended Support Release) coming with Firefox 10 on January 31st also means Firefox 3.6 support will finally be ending. Mozilla will end support for Firefox 3.6 on April 24th, 2012 which is 12-weeks after the first Firefox ESR launch on January 31st, 2012. Firefox 3.6 was released in January 2010 and will be the longest running Firefox release at 27 months (followed by Firefox 2.0.0 which was retired after 22 months).
