New release of this distro came out recently:

The developers of Sabayon, a Gentoo-based Linux distribution, have announced the availability of Sabayon 15.06. The new release features several package upgrades, including an update to the 4.0 Linux kernel. Sabayon makes proprietary video drivers available for improved graphics performance and ships with a lot of desktop functionality out of the box. "We changed a lot of things under the hood, and with this release we wanted to show them up also on the surface. All the flavors received the deserved love. We moved to 4.0 kernel, GCC 4.9.2, systemd 216, x265 support, primus for high performance graphics on Optimus card, prepared Entropy for Plasma 5, libav 11.3, Kodi (the new name of XBMC): the complete changelog files related to this release are available on our mirrors. We have some very exciting improvements in the pipeline.

Distribution Release: Sabayon 15.06 (DistroWatch.com News)


Download from here:
Mirror List | Sabayon | Home

It's a rolling release distro. So it's much like an arch-based system or Opensuse Tumbleweed.

Enjoy your day.