Red Hat offers support and services for each major release of Red Hat Enterprise Linux throughout four phases - Full Support, Maintenance 1 and 2, and the Extended Life Phase. For Red Hat Enterprise Linux 6, the Full/Maintenance Phases span 10 years, followed by an Extended Life Phase. Together, these four phases constitute the life cycle. Red Hat Enterprise Linux 6-based products will transition from the Maintenance Phase to the Extended Life Phase. Users are recommended to upgrade to the latest supported OS.