Release Notes: Kubuntu 13.04 is based on Linux kernel 3.8 and KDE Software Compilation 4.10. Included is is the new version of the Muon Suite for app install and upgrades. It introduces support for installing Plasma widgets. Version 2 of the Rekonq Web browser adds many new features. Homerun is a full screen alternative to the Kickoff application menu. A new screen management tool makes it easy to attach and unattach extra monitors. Available on the default install is a new font: Oxygen Sans.
Release Notes: New in this release are KDE Plasma desktop and KDE applications 4.8, Amarok 2.5 music player, Calligra 2.4 office suite, KDE Telepathy instant messaging, Kubuntu Active Technology Preview of interface for tablets, updated Rekonq Web browser, updated ownCloud, and improved Muon software management center and updater. Linux kernel 3.2.14 was included. This is a long-term support (LTS) release, which means it is supported for 5 years.
Release Notes: Updated KDE packages.