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.
Packages for the release of KDE SC 4.12.2 are available for Kubuntu 12.04LTS, 13.10 and our development release. You can get them from the Kubuntu Backports PPA. It includes an update of kde-workspace to 4.11.6.
"Trust only movement. Life happens at the level of events, not of words. Trust movement." -- Alfred Adler
The first Alpha of the Trusty Tahr (to become 14.04) has now been released!
The Alpha-1 images can be downloaded at: http://cdimage.ubuntu.com/kubuntu/releases/trusty/alpha-1/
More information on Kubuntu Alpha-1 can be found here: https://wiki.ubuntu.com/TrustyTahr/Alpha1/Kubuntu