This page summarizes Ubuntu releases and milestones for 2015.
¶ Releases and Versions
- Ubuntu 15.04 “Vivid Vervet” released on 2015-04-23.
- Ubuntu 15.10 “Wily Werewolf” released on 2015-10-22.
- 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/