Release History
| CentOS Release | Architectures | RHEL base | Kernel | CentOS release date | RHEL release date | Delay |
|---|---|---|---|---|---|---|
| 2.1 | i386 | 2.1 | 2.4.9 | 2004-05-14 | 2002-05-17 | 728d |
| 3.1 | i386, x86-64, IA-64, s390, s390x | 3.1 | 2.4.21-15 | 2004-03-19 | 2003-10-23 | 148d |
| 3.3 | i386, x86-64, IA-64, s390, s390x | 3.3 | 2.4.21-20 | 2004-09-17 | 2004-09-03 | 14d |
| 3.4 | i386, x86-64, IA-64, s390, s390x | 3.4 | 2.4.21-27 | 2005-01-23 | 2004-12-12 | 42d |
| 3.5 | i386 | 3.5 | 2.4.21-32 | 2005-06-10 | 2005-05-18 | 23d |
| 3.6 | i386 | 3.6 | 2.4.21-37 | 2005-11-01 | 2005-09-28 | 34d |
| 3.7 | i386, x86-64, IA-64, s390, s390x | 3.7 | 2.4.21-40 | 2006-04-10 | 2006-03-17 | 23d |
| 3.8 | i386, x86-64 | 3.8 | 2.4.21-47 | 2006-08-25 | 2006-07-20 | 36d |
| 3.9 | i386, x86-64, IA-64, s390, s390x | 3.9 | 2.4.21-50 | 2007-07-26 | 2007-06-15 | 41d |
| 4.0 | i386, x86-64, various | 4.0 | 2.6.9-5 | 2005-03-09 | 2005-02-14 | 23d |
| 4.1 | i386, ia64, s390 | 4.1 | 2.6.9-11 | 2005-06-12 | 2005-06-08 | 4d |
| 4.2 | i386, x86-64, ia64, s390, s390x, alpha | 4.2 | 2.6.9-22 | 2005-10-13 | 2005-10-05 | 8d |
| 4.3 | i386, x86-64, ia64, s390, s390x | 4.3 | 2.6.9-34 | 2006-03-21 | 2006-03-12 | 9d |
| 4.4 | i386, x86-64 | 4.4 | 2.6.9-42 | 2006-08-30 | 2006-08-10 | 20d |
| 4.5 | i386, x86-64, IA-64 | 4.5 | 2.6.9-55 | 2007-05-17 | 2007-05-01 | 16d |
| 4.6 | i386, x86-64, IA-64, Alpha, s390, s390x, PowerPC (beta), SPARC (beta) | 4.6 | 2.6.9-67 | 2007-12-16 | 2007-11-16 | 30d |
| 4.7 | i386, x86-64 | 4.7 | 2.6.9-78 | 2008-09-13 | 2008-07-24 | 51d |
| 4.8 | i386, x86-64 | 4.8 | 2.6.9-89 | 2009-08-21 | 2009-05-18 | 95d |
| 4.9 | i386, x86-64 | 4.9 | 2.6.9-100 | 2011-03-02 | 2011-02-16 | 14d |
| 5.0 | i386, x86-64 | 5.0 | 2.6.18-8 | 2007-04-12 | 2007-03-14 | 28d |
| 5.1 | i386, x86-64 | 5.1 | 2.6.18-53 | 2007-12-02 | 2007-11-07 | 25d |
| 5.2 | i386, x86-64 | 5.2 | 2.6.18-92 | 2008-06-24 | 2008-05-21 | 34d |
| 5.3 | i386, x86-64 | 5.3 | 2.6.18-128 | 2009-03-31 | 2009-01-20 | 69d |
| 5.4 | i386, x86-64 | 5.4 | 2.6.18-164 | 2009-10-21 | 2009-09-02 | 49d |
| 5.5 | i386, x86-64 | 5.5 | 2.6.18-194 | 2010-05-14 | 2010-03-31 | 44d |
| 5.6 | i386, x86-64 | 5.6 | 2.6.18-238 | 2011-04-08 | 2011-01-13 | 85d |
| 5.7 | i386, x86-64 | 5.7 | 2.6.18-274 | 2011-09-13 | 2011-07-21 | 54d |
| 5.8 | i386, x86-64 | 5.8 | 2.6.18-308 | 2012-03-07 | 2012-02-21 | 15d |
| 6.0 | i386, x86-64 | 6.0 | 2.6.32-71 | 2011-07-10 | 2010-11-10 | 242d |
| 6.1 | i386, x86-64 | 6.1 | 2.6.32-131 | 2011-12-09 | 2011-05-19 | 204d |
| 6.2 | i386, x86-64 | 6.2 | 2.6.32-220 | 2011-12-20 | 2011-12-06 | 14d |
| 6.3 | i386, x86-64 | 6.3 | 2.6.32-279 | 2012-07-09 | 2012-06-21 | 18d |
In accordance with the Red Hat Enterprise Linux Life Cycle CentOS 5 and 6 will also be supported for 10 years. Previously, CentOS 4 had been supported for 7 years.
| CentOS Release | Full Updates | Maintenance Updates |
|---|---|---|
| 3 | 2006-07-20 | 2010-10-31 |
| 4 | 2009-03-31 | 2012-02-29 |
| 5 | Q1 2014 | 2017-03-31 |
| 6 | Q2 2017 | 2020-11-30 |
| CentOS Release | Architectures | RHEL base | CentOS release date |
|---|---|---|---|
| 4.7 - Server | i386, x86-64 | 4.7 | 2008-10-17 |
| 5.1 - LiveCD | i386 | 5.1 | 2008-02-18 |
| 5.2 - LiveCD | i386 | 5.2 | 2008-07-17 |
| 5.3 - LiveCD | i386 | 5.3 | 2009-05-27 |
| 5.5 - LiveCD | i386, x86-64 | 5.5 | 2010-05-14 |
| 5.6 - LiveCD | i386, x86-64 | 5.6 | 2011-04-08 |
| 6.0 - LiveCD | i386, x86-64 | 6.0 | 2011-07-25 |
| 6.0 - LiveDVD | i386, x86-64 | 6.0 | 2011-07-27 |
| 6.0 - MinimalCD | i386, x86-64 | 6.0 | 2011-07-28 |
| 6.1 - LiveCD | i386, x86-64 | 6.1 | 2011-12-09 |
| 6.1 - LiveDVD | i386, x86-64 | 6.1 | 2011-12-09 |
| 6.1 - MinimalCD | i386, x86-64 | 6.1 | 2011-12-09 |
| 6.2 - LiveCD | i386, x86-64 | 6.2 | 2011-12-20 |
| 6.2 - LiveDVD | i386, x86-64 | 6.2 | 2011-12-20 |
| 6.2 - MinimalCD | i386, x86-64 | 6.2 | 2011-12-20 |
| 6.3 - MinimalCD | i386, x86-64 | 6.3 | 2012-07-09 |
| 6.3 - LiveCD | i386, x86-64 | 6.3 | 2012-07-15 |
| 6.3 - LiveDVD | i386, x86-64 | 6.3 | 2012-07-15 |
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