- Also see info about the most recent LTS version, Trusty Tahr (14.04 LTS).
- On April 25, 2013, Ubuntu 13.04 was released.
- It is codenamed Raring Ringtail and is the successor to Quantal Quetzal 12.10 (Quantal+1).
- Raring Ringtail is not an LTS (Long Term Support) release and is no longer supported with security updates (as of December 2013). It is recommended to upgrade to the current version of Ubuntu.