The following tutorial will teach both existing and new Kubuntu/Ubuntu users how to install or upgrade the brand-new and featureful KDE SC 4.12 desktop environment on their existing and healthy Ubuntu/Kubuntu 13.10 (Saucy Salamander) and 12.04 LTS (Precise Pangolin) operating systems. As expected, the Kubuntu developers packaged the KDE Software Compilation’s new version for its Kubuntu 13.10 and 12.04 LTS releases, via an easy to use PPA. However, the package also work well on other Ubuntu 13.10 and 12.04 LTS based Linux operating systems, so the following guide will teach you how to install KDE SC 4.12 on top of your existing Ubuntu installation.