This page summarizes Ubuntu releases and milestones for 2009.
¶ Releases and Versions
- Ubuntu 9.04 “Jaunty Jackalope” released on 2009-04-23.
- Ubuntu 9.10 “Karmic Koala” released on 2009-10-29.
- Ubuntu releases in April and October, with LTS releases every two years in April.
- https://en.wikipedia.org/wiki/Ubuntu_version_history
- https://documentation.ubuntu.com/project/release-team/list-of-releases/