Moodle is in constant development and there are many versions, with an active release calendar for major and minor releases.
Generally, new major versions of Moodle are released every six months, and then supported for a period of time. Some of these releases are also Long Term Support (or LTS) releases which are supported for longer with backported security updates.
More information can be found on our Moodle releases page.
*To download our latest or previous releases, go to the Moodle Downloads page.