The Red Hat team has published a reminder that Red Hat Enterprise Linux 5 and its clones, such as CentOS, will reach the end of their supported life cycles at the end of March 2017. "In accordance with the Red Hat Enterprise Linux Errata Support Policy, support for Red Hat Enterprise Linux 5 will be retired on March 31, 2017, at the end of Production Phase 3. Until that date, customers will continue to receive Critical impact security patches and selected Urgent priority bug fixes for RHEL 5.11 (the final RHEL 5 release). On that date, active support included with your RHEL Premium or Standard subscription will conclude. This means that customers will continue to have access to all previously released content." Red Hat customers who wish to continue running version 5 of their operating system have the option of purchasing Extended Life Cycle Support to extend support though to November 30, 2020. The Red Hat errata notes have further details.