Life-cycle Dates
Red Hat Enterprise Linux versions 5 and 6 share a multiphase life-cycle that can span 13 years, while versions 3 and 4 share a life cycle of 10 years. During the first five and a half years of the life cycle ("production 1"), Red Hat provides full support and updates software and hardware drivers. In later phases, support and updates are gradually reduced, with only critical and security-related bug fixes being provided to customers who pay for support in the last three years ("extended life cycle").
| Version | Date of Release | End of Support Dates |
|---|---|---|
| Red Hat Enterprise Linux 2.1 | 2002-03-26 (AS) 2003-05-01 (ES) |
2004-11-30 (End of Production 1) 2005-05-31 (End of Production 2) |
| Red Hat Enterprise Linux 3 | 2003-10-23 |
2006-07-20 (End of Production 1) 2007-06-30 (End of Production 2) |
| Red Hat Enterprise Linux 4 | 2005-02-14 | 2009-03-31 (End of Production 1) 2011-03-31 (End of Production 2) |
| Red Hat Enterprise Linux 5 | 2007-03-15 | Q4 2012 (End of Production 1) Q1 2014 (End of Production 2) |
| Red Hat Enterprise Linux 6 | 2010-11-10 | Q2 2016 (End of Production 1) Q2 2017 (End of Production 2) |
| Red Hat Enterprise Linux 7 | Scheduled for the second half of 2013 | Undisclosed |
Note: A version outside of its Regular Life Cycle is normally unsupported, but for RHEL3 and RHEL4, support can still be obtained through Red Hat while the release is in its Extended Life Cycle through an add-on subscription, Extended Life Cycle Support.
Read more about this topic: Red Hat Enterprise Linux
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