KDE 4.1.2 has been released and packages are available for Kubuntu 8.04,
the Hardy Heron. These packages install to /usr/lib/kde4 and can be
installed along side your existing KDE 3 installation.
The updated packages for Kubuntu 8.04 are located in the Kubuntu Member's KDE 4 Personal Package Archive (PPA) repositories. To update to KDE 4.1.2, please follow these instructions:
Follow the Kubuntu Repository Guide to enable Recommended Updates (backports) and add the following to your 'Third-Party Software' tab:
You can now update any existing KDE 4 installation to the most recent version using the Adept Updater tool in your system tray.
Please follow the Adept How to and install the package called "kubuntu-kde4-desktop", if you are still running KDE 3 and want to install KDE 4 along your current desktop,
Now you should be able to select your new KDE 4 desktop as session in your login manager. In KDM for example: Click the Session Type option and select KDE 4, then proceed with the usual login steps.
kdeplasma-addons contains new Plasma fun.
Thanks to Steve, Jon, Richard, Roderick, Guillaume and Harald for preparing these packages.
If you want to see your name above, then join the Kubuntu Team.
More information is available in the Kubuntu Wiki