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The following table shows the release time lines for all releases of Asterisk, including those that have reached End of Life.
Release Series | Release Type | Release Date | Security Fix Only | EOL |
|---|---|---|---|---|
| 1.2.Xx |
| 2007-08-07 | 2010-11-21 | |
1.4.Xx | LTS | 2011-04-21 | 2012-04-21 | |
1.6.0.Xx | Standard | 2010-05-01 | 2010-10-01 | |
1.6.1.Xx | Standard | 2010-05-01 | 2011-04-27 | |
1.6.2.Xx | Standard | 2011-04-21 | 2012-04-21 | |
1.8.Xx | LTS | 2014-10-21 | 2015-10-21 | |
| 10.Xx | Standard | 2012-12-15 | 2013-12-15 | |
11.x | LTS | 2016-10-25 | 2017-10-25 | |
12.x | Standard | 2014-12-20 | 2015-12-20 | |
13.x | LTS | 2020-10-24 | 2021-10-24 | |
| 14.x | Standard | 2016-09-26 | 2017-09-26 | 2018-09-26 |
15.x | Standard | 2018-10-03 | 2019-10-03 | |
| 16.x | LTS | 2018-10-09 | 2022-10-09 | 2023-10-09 |
| 17.x | Standard | 2019-10-28 | 2020-10-28 | 2021-10-28 |
| 18.x | LTS | 2020-10-20 | 2024-10-20 | 2025-10-20 |
| 19.x | Standard | 2021-11-02 | 2022-11-02 | 2023-11-02 |
| 20.x | LTS | 2022-10-19 | 2026-10-19 | 2027-10-19 |
| 21.x | Standard | 2023-10-18 | 2025-10-18 | 2026-10-18 |
New releases of Asterisk will be made roughly once a year, alternating between standard and LTS releases. Within a given release series that is fully supported, bug fix updates are provided roughly every 4 to 6 weeks. For a release series that is receiving only maintenance for security fixes, updates are made on an as needed basis.
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