Packages for Kubuntu Utopic Next and Next backports PPAs for Utopic (14.10) are now deprecated.
To test upgrade to Vivid, please use the PPA-purge package to remove those PPAs and packages, and then install `kubuntu-desktop` meta-package, and finally:
sudo apt update && sudo apt full-upgrade
Live Image of Kubuntu Vivid with Packages from Git The Weekly Live Image, updated every Friday with latest source from Git to run a full system from a USB disk. Based on Kubuntu 15.04, Vivid.
KDE Frameworks 5 and Plasma 5 is available in the Vivid development version of Kubuntu, now in beta.
openSUSE offers snapshots from git master updated frequently as well. Add the KDE:Unstable:Frameworks repository (http://en.opensuse.org/SDB:KDE_repositories#Plasma_Next) and the Qt53 repository (available at the same link) and install the plasma-next-session package to have a session available at the next login.
Gentoo provides beta as well as live ebuilds inside kde overlay, with dependencies in qt overlay. The following assumes you have a basic understanding of Gentoo Portage and already set up layman initially:
layman -a kde && layman -a qt emerge @kde-next-live --autounmask-write=y
To make the most of it, run
layman -S && smart-live-rebuild
to get the latest packaging changes for qt and kde and update any live packages that got new commits since last time.
See also: Gentoo KDE/Frameworks Packaging Status
Now that Plasma 5 has been released, Fedora packaging only tracks the official Plasma 5 releases, not snapshots. See Plasma/Packages#Fedora for installation instructions.
Plasma 5 workspace is available through the official repositories. For the full installation, simply install plasma-next.
Frameworks 5 libraries are also in the official repositories under kf5 and kf5-aids.
There are git versions of the above, as well as many other Frameworks 5 applications installable through the AUR.
See the KDE page on the ArchWiki for more information.
Following the instructions here it will automatically build all KDE software that has a KF5 port, most notably the Plasma workspaces, but also development previews of Kate, Konsole and Dolphin.
Afterwards follow the guides for "Runtime setup" and then run "kwin --replace" and "plasmashell".
Kubuntu-based Live CD: http://files.kde.org/snapshots/neon5-latest.iso (More information at http://kshadeslayer.wordpress.com/2013/12/03/introducing-project-neon-5-isos/)
Fedora-based LiveCD: https://dvratil.fedorapeople.org/plasma5/iso/ (More information at http://www.progdan.cz/2014/05/kde-frameworks-5-beta-and-plasma-next-preview-on-fedora/)