KDE Plasma 5 is hitting release candidate now: Schedules/Plasma 5 - KDE TechBase.
How can I install plasma 5 in Ubuntu 14.04.
Since Dec, 05 2014, project neon is no more available as a PPA, unfortunately.
Utopic is shipped with Plasma 4. If you want Plasma 5 there is a KDE Next PPA (which will provide updated KDE too), but it'll replace the current installed KDE
sudo apt-add-repository ppa:kubuntu-ppa/next
sudo apt update
sudo apt install kubuntu-plasma5-desktop
sudo apt full-upgrade
And finally, after save all your work:
sudo reboot
Kubuntu CI: the replacement for Project Neon - blogs.kde.org
Frameworks/Binary Packages - KDE Community Wiki
