Roberto Dohnert has announced the release of OS4 12.5, a custom Linux distribution previously known as PC/OS that is based upon Ubuntu and is built for fun, compatibility, security, and mobility: "OS4 12.5 has been designed from the ground up to satisfy the needs of casual PC users all the way to the professional user. It is available in 32 and 64 bit releases. Built for the professional: With OS4 you have a quality multi processing core in your system, and with support for 3D graphics and audio, everyone from the digital animator, video editor, musician all the way to the researchers studying DNA sequencing to working in clusters, OS4 will fit your needs. With a fine set of standard applications, to the extensibility of installing thousands of more applications, OS4 was built for you."
PC/OS is a user-friendly desktop and server Linux distribution based on Xubuntu. Some of its most interesting features include support for popular browser plugins, addition of packages for multimedia production, content creation and software development, and an innovative desktop layout.