SugarCRM has just announced the dates that all currently supported versions will be retired. It is imperative that you upgrade before those dates so that you can be sure that you will continue to receive security updates.
- Version 4.5.1 - September 30, 2009
- Version 5.0.0 - January 31, 2010
- Version 5.1.0 - March 31, 2010
- Version 5.2.0 - December 31, 2010
Once a version is retired SugarCRM will no longer provide customer support, maintenance patches or bug fixes.