Welcome to Kubuntu 14.04 LTS, a brand new Long Term Supported version with the latest KDE software to enjoy.
Long Term Support means bugfixes and security updates will be added for the next 5 years, so you can be safe to use it until 2019. New releases of important KDE Software will also be available from the Kubuntu Updates and Kubuntu Backports PPAs.
Read more at Kubuntu