Ubuntu 18.04 Bionic Beaver

The 'main' archive of Ubuntu 18.04 LTS will be supported for 5 years until April 2023. Ubuntu 18.04 LTS will be supported for 5 years for Ubuntu Desktop, Ubuntu Server, and Ubuntu Core. Ubuntu Studio 18.04 will be supported for 9 months. All other flavors will be supported for 3 years.

• https://wiki.ubuntu.com/BionicBeaver/ReleaseNotes/18.04
• https://help.ubuntu.com/
• https://help.ubuntu.com/community

• https://launchpad.net/ubuntu/+ppas
• http://ubuntuforums.org/
• http://askubuntu.com/questions/tagged/18.04