Not really. This is a "Rolling Release". If you want more stability, maybe better wait for the next official Sabayon. I guess it will come in April. When you boot with a Sabayon Live System (with USB or DVD) then you can check some, resp. many features before you install definitely. Anyway, I recommend to backup your last 'stable' system always before you want to update that system.
-Linuxfluesterer (I love KDE ...)
I really hope, that by the Brexit (poor Britain), TTIP will be finally prevented. But don't get tired to talk to your local politician to open eyes for danger to democracy because of TTIP