Children

• Warty Warthog 4.10 | page
• Hoary Hedgehog 5.04 | page

Biannual

Each Ubuntu release has a version number that consists of the year and month number of the release.[93] For example, the first release was Ubuntu 4.10 as it was released on 20 October 2004.

Ubuntu releases are also given alliterative code names, using an adjective and an animal (e.g. “Xenial Xerus”). With the exception of the first two releases, code names are in alphabetical order, allowing a quick determination of which release is newer, at least until restarting the cycle with the release of Artful Aardvark in October 2017.[94] Commonly, Ubuntu releases are referred to using only the adjective portion of the code name; for example, the 18.04 LTS release is commonly known as “Bionic”. Releases are timed to be approximately one month after GNOME releases.