Release Notes
From WHMCS Documentation
Version 4.0
First Released: 6th May 2009 View Release Notes
Version 4.1
First Released: 26th August 2009 View Release Notes
Version 4.2
First Released: 5th February 2010 View Release Notes
Version 4.3
First Released: 20th July 2010 View Release Notes
Version 4.4
First Released: 1st December 2010 View Release Notes
Version 4.5
First Released: 19th April 2011 View Release Notes