Plasma 5.6.x is available to install on Kubuntu 16.04 LTS using the Kubuntu Backports PPA.
Plasma 5.6.4 adds a fresh round of fixes and improvements to the maturing Plasma 5 desktop experience, including a bug fix for the digital clock applet.
For a brief overview of all that’s new in the 5.6.x series take a looksie at the official launch video:
The Kubuntu Backports PPA
Kubuntu 16.04 LTS ships with Plasma 5.5.5 by default. With Plasma 5.6.x offering a huge number of new features, interface polish, and all-round improvements it’s well worth upgrading to.
The Kubuntu backports PPA is the official way to install the latest Plasma desktop on Kubuntu 16.04 LTS, as well as newer versions of the KDE Applications and KDE frameworks.
To add the backports PPA — and although official you use it at your own risk — open a new Konsole/Terminal window and run the following two commands:
sudo apt-add-repository ppa:kubuntu-ppa/backports sudo apt update && sudo apt full-upgrade -y
That’s it; logout/reboot as necessary and enjoy your updated Kubuntu desktop.
- Source: Kubuntu