Packages for the release of KDE’s desktop suite Plasma 5.3.2 and KDE’s Frameworks 5.12.0 are available for Kubuntu 15.04. You can get them from the Kubuntu Backports PPA.
Bugs in the packaging should be reported to kubuntu-ppa on Launchpad. Bugs in the software to KDE.
To update, use the Software Repository Guide to add the following repository to your software sources list:
ppa:kubuntu-ppa/backports
Special thanks to sgclark for packaging this update and to testers who hang out on #kubuntu-devel IRC channel.
Sumber: https://www.kubuntu.org/news/plasma-532-and-frameworks-5120-backported-kubuntu-1504/