Ubuntu 13.04 (Raring Ringtail) released
Ubuntu has announced the release of 13.04, "Raring Ringtail", with versions for both servers and desktops. Many improvements and updates have come with 13.04 and there are also corresponding Kubuntu, Xubuntu, Edubuntu, Lubuntu, and Ubuntu Studio releases. "Along with performance improvements to Unity, updates to common desktop
packages, and updated core and toolchain components, Ubuntu 13.04 also
includes the new Friends service, to consolidate all social networking
accounts via Ubuntu Online Accounts. Also included is a tech preview
of Upstart's new user session feature."