Releases

For more details on all Ubuntu releases including older ones not covered here, see Ubuntu version history.

Version	Code name	Release date	Supported until
12.04 LTS	Precise Pangolin	2012-04-26	2017-04-26
12.10	Quantal Quetzal	2012-10-18	2014-05-16
13.04	Raring Ringtail	2013-04-25	2014-01-27[20]
13.10	Saucy Salamander	2013-10-17	2014-07-17
14.04 LTS[70]	Trusty Tahr	2014-04-17	2019-04
14.10	Utopic Unicorn[71]	2014-10-23[72]	2015-07-23
15.04	Vivid Vervet[73]	2015-04-23	2016-02-04
15.10	Wily Werewolf[74]	2015-10-22[75]	2016-07-28[76]
16.04 LTS	Xenial Xerus[77]	2016-04-21[78]	2021-04
16.10	Yakkety Yak[79]	2016-10-13[80]	2017-07[81]
17.04	Zesty Zapus	2017-04	2018-01
Old version Older version, still supported Latest version Future release

Each Ubuntu release has a version number that consists of the year and month number of the release.^[82] For example, the first release was Ubuntu 4.10 as it was released on 20 October 2004. Version numbers for future versions are provisional; if the release is delayed the version number changes accordingly.
Ubuntu releases are also given alliterative code names, using an adjective and an animal (e.g., "Trusty Tahr" and "Precise Pangolin"). With the exception of the first two releases, code names are in alphabetical order, allowing a quick determination of which release is newer. "We might skip a few letters, and we'll have to wrap eventually" says Mark Shuttleworth while describing the naming scheme.^[83] Commonly, Ubuntu releases are referred to using only the adjective portion of the code name; for example, the 14.04 LTS release is commonly known as "Trusty".
Releases are timed to be approximately one month after GNOME releases (which in turn are about one month after releases of X.org). As a result, every Ubuntu release was introduced with an updated version of both GNOME and X. After major releases, the Ubuntu Developer Summit (UDS) is held, at which the Ubuntu community sets the development direction for the next cycle. The latest such event, as of June 2016, was held 5–7 May 2015, after Ubuntu 15.04 and planning 15.10.^[84]
Upgrades from one LTS release to the next LTS release (e.g. Ubuntu 14.04 LTS to Ubuntu 16.04 LTS) are supported,^[85] while upgrades from non-LTS have only supported upgrade to the next release, regardless of its LTS status (e.g. Ubuntu 15.10 to Ubuntu 16.04 LTS).
Ubuntu 10.10 (Maverick Meerkat), was released on 10 October 2010 (10–10–10). This departed from the traditional schedule of releasing at the end of October in order to get "the perfect 10",^[86] and makes a playful reference to The Hitchhiker's Guide to the Galaxy books, since, in binary, 101010 equals decimal 42, the "Answer to the Ultimate Question of Life, the Universe and Everything" within the series.^[87]
Ubuntu 14.04.1 and all later releases require a 2 GB or larger installation medium.^[88] Server releases still fit on CDs.^[89]