ubuntu的版本生命周期

Releases

https://wiki.ubuntu.com/Releases

List of releases

Current

Version	Code name	Docs	Release	End of Standard Support	End of Life
Ubuntu 19.10	Eoan Ermine	Release Notes	October 17, 2019	July, 2020	July, 2020
Ubuntu 18.04.4 LTS	Bionic Beaver	Changes	February 12, 2020	April 2023	April 2028
Ubuntu 18.04.3 LTS	Bionic Beaver	Changes	August 8, 2019	April 2023	April 2028
Ubuntu 18.04.2 LTS	Bionic Beaver	Changes	February 15, 2019	April 2023	April 2028
Ubuntu 18.04.1 LTS	Bionic Beaver	Changes	July 26, 2018	April 2023	April 2028
Ubuntu 18.04 LTS	Bionic Beaver	Release Notes	April 26, 2018	April 2023	April 2028
Ubuntu 16.04.6 LTS	Xenial Xerus	Changes	February 28, 2019	April 2021	April 2024
Ubuntu 16.04.5 LTS	Xenial Xerus	Changes	August 2, 2018	April 2021	April 2024
Ubuntu 16.04.4 LTS	Xenial Xerus	Changes	March 1, 2018	April 2021	April 2024
Ubuntu 16.04.3 LTS	Xenial Xerus	Changes	August 3, 2017	April 2021	April 2024
Ubuntu 16.04.2 LTS	Xenial Xerus	Changes	February 16, 2017	April 2021	April 2024
Ubuntu 16.04.1 LTS	Xenial Xerus	Changes	July 21, 2016	April 2021	April 2024
Ubuntu 16.04 LTS	Xenial Xerus	Release Notes	April 21, 2016	April 2021	April 2024
Ubuntu 14.04.6 LTS	Trusty Tahr	Changes	March 7, 2019	April 2019	April 2022
Ubuntu 14.04.5 LTS	Trusty Tahr	Changes	August 4, 2016	April 2019	April 2022
Ubuntu 14.04.4 LTS	Trusty Tahr	Changes	February 18, 2016	HWE August 2016	April 2022
Ubuntu 14.04.3 LTS	Trusty Tahr	Changes	August 6, 2015	HWE August 2016	April 2022
Ubuntu 14.04.2 LTS	Trusty Tahr	Changes	February 20, 2015	HWE August 2016	April 2022
Ubuntu 14.04.1 LTS	Trusty Tahr	Changes	July 24, 2014	April 2019	April 2022
Ubuntu 14.04 LTS	Trusty Tahr	Release Notes	April 17, 2014	April 2019	April 2022

Release announcements are posted on the ubuntu-announce mailing list.

Future

Version	Code name	Docs	Release	End of Life
Ubuntu 20.04 LTS	Focal Fossa	Release Notes	Focal Fossa	2030

Extended Security Maintenance

Extended Security Maintenance is a paid option through Ubuntu Advantage to get extended support and security updates for select server packages.

Version	Supported Packages	Start of ESM	# of Years	End of Life
Ubuntu 18.04 ESM	To be announced	April 2023	5 years	April 2028
Ubuntu 16.04 ESM	To be announced	April 2021	3 years	April 2024
Ubuntu 14.04 ESM	SecurityTeam/ESM/14.04	April 25, 2019	3 years	April 2022
Ubuntu 12.04 ESM	SecurityTeam/ESM/12.04	April 28, 2017	2 years	April 2019

End of Life

Version	Code name	Docs	Release	End of Life
Ubuntu 19.04	Disco Dingo	Release Notes	April 18, 2019	January 23, 2020
Ubuntu 18.10	Cosmic Cuttlefish	Release Notes	October 18, 2018	July 18, 2019
Ubuntu 17.10	Artful Aardvark	Release Notes	October 19, 2017	July 19 2018
Ubuntu 17.04	Zesty Zapus	Rel	April 13, 2017	January 13, 2018
Ubuntu 16.10	Yakkety Yak	Rel	October 13, 2016	July 20, 2017
Ubuntu 15.10	Wily Werewolf	Rel	October 22, 2015	July 28, 2016
Ubuntu 15.04	Vivid Vervet	Rel	April 23, 2015	February 4, 2016
Ubuntu 14.10	Utopic Unicorn	Rel	October 23, 2014	July 23, 2015
Ubuntu 13.10	Saucy Salamander	Rel	October 17, 2013	July 17, 2014
Ubuntu 13.04	Raring Ringtail	Rel	April 25, 2013	January 27, 2014
Ubuntu 12.10	Quantal Quetzal	Tech / Rel	October 18, 2012	May 16, 2014
Ubuntu 12.04.5 LTS	Precise Pangolin	Rel	August 7, 2014	April 28, 2017
Ubuntu 12.04.4 LTS	Precise Pangolin	Changes	February 6, 2014	HWE August 8, 2014
Ubuntu 12.04.3 LTS	Precise Pangolin	Changes	August 23, 2013	HWE August 8, 2014
Ubuntu 12.04.2 LTS	Precise Pangolin	Changes	February 14, 2013	HWE August 8, 2014
Ubuntu 12.04.1 LTS	Precise Pangolin	Changes	August 24, 2012	April 28, 2017
Ubuntu 12.04 LTS	Precise Pangolin	Tech / Rel	April 26, 2012	April 28, 2017
Ubuntu 11.10	Oneiric Ocelot	Tech / Rel	October 13, 2011	May 9, 2013
Ubuntu 11.04	Natty Narwhal	Tech / Rel	April 28, 2011	October 28, 2012
Ubuntu 10.10	Maverick Meerkat	Tech / Rel	October 10, 2010	April 10, 2012
Ubuntu 10.04.4 LTS	Lucid Lynx	Changes	February 16, 2012	May 9, 2013 (Desktop) April 30, 2015 (Server)
Ubuntu 10.04.3 LTS	Lucid Lynx	Changes	July 21, 2011
Ubuntu 10.04.2 LTS	Lucid Lynx	Changes	February 18, 2011
Ubuntu 10.04.1 LTS	Lucid Lynx	Changes	August 17, 2010
Ubuntu 10.04 LTS	Lucid Lynx	Tech / Rel	April 29, 2010
Ubuntu 10.04	Lucid Lynx (Desktop)	Changes	February 16, 2012	May 9, 2013
Ubuntu 9.10	Karmic Koala	Tech / Rel	October 29, 2009	April 30, 2011
Ubuntu 9.04	Jaunty Jackalope	Tech / Rel	April 23, 2009	October 23, 2010
Ubuntu 8.10	Intrepid Ibex	Rel	October 30, 2008	April 30, 2010
Ubuntu 8.04.4 LTS	Hardy Heron (Server)	Changes	January 28, 2010	May 9, 2013
Ubuntu 8.04.3 LTS	Hardy Heron	Changes	July 16, 2009
Ubuntu 8.04.2 LTS	Hardy Heron	Changes	January 22, 2009
Ubuntu 8.04.1 LTS	Hardy Heron	Hardy Heron	July 3, 2008
Ubuntu 8.04 LTS	Hardy Heron	Hardy Heron/Rel	April 24, 2008
Ubuntu 8.04	Hardy Heron (Desktop)	Rel	April 24, 2008	May 12, 2011
Ubuntu 7.10	Gutsy Gibbon	Rel	October 18, 2007	April 18th, 2009
Ubuntu 7.04	Feisty Fawn	Rel	April 19, 2007	October 19, 2008
Ubuntu 6.10	Edgy Eft		October 26, 2006	April 26, 2008
Ubuntu 6.06.2 LTS	Dapper Drake (Server)		January 21, 2008	June 1, 2011
Ubuntu 6.06.1 LTS	Dapper Drake		August 10, 2006
Ubuntu 6.06 LTS	Dapper Drake	Rel	June 1, 2006
Ubuntu 6.06	Dapper Drake (Desktop)	Rel	June 1, 2006	July 14, 2009
Ubuntu 5.10	Breezy Badger	Rel	October 12, 2005	April 13, 2007
Ubuntu 5.04	Hoary Hedgehog		April 8, 2005	October 31, 2006
Ubuntu 4.10	Warty Warthog		October 26, 2004	April 30, 2006

The content of these old releases can be accessed at the old Ubuntu releases directory.

Management of releases

Support length

Regular releases are supported for 9 months.
Packages in main and restricted are supported for 5 years in long term support (LTS) releases. Flavors generally support their packages for 3 years in LTS releases but there are exceptions. See the release notes for specific details.