Kubuntu 18.04 - 'Bionic Beaver' - the latest and greatest release of the KDE version of Ubuntu. Kubuntu 18.04 - 'Bionic Beaver' - Balanced and full-featured fork of Ubuntu Linux - Released April 26, 2018. Use as Live Boot Disc or use to install on a hard drive. Free updates, including security and application updates. Free Application library available to extend the operating system features. Works GREAT on older PCs.