Sabayon follows a rolling release development model,
which means that once you install a new system, you may never need
to re-install - ever.
While the project provides installation images for all known
desktop environments, only those for the 32- and 64-bit editions of
the K Desktop Environment, GNOME 3, and Xfce, have so far being
made available for download. Going by the distribution's release
history, installation images for other (supported) desktop
environments should be released soon. This article offers a summary
review of Sabayon 8 KDE.