If you download a daily iso, they are about a week old, will be less updates to get current.
Once you update
sabayon and stay updated, is no need to install 7 or a newer version ... as a rolling release, you will have the newest point release before it is available on the mirrors.
Only real reason to have point releases now, 5.0, 5.5. 6, etc... is to cut down on the amount of updates to get current.
As a rule of thumb, sabayon next release will be ready when it is ready, not pushed out by any certain guide lines, or future release date.
One thing that does put pressure on the dev's, Is when a current release like 6, requires as much or more bandwith to update
as a 2+ gig dvd down load ....and 6 is not there yet, butt is heading that way.
Again, just grab a daily iso to install.
About gnome, everyone knows that it is still beta, many sabayon gnome users have migrated to other de like xfce, kde ....
They will ride it out until gnome improves.
sabayon does not ship with gnome-shell, is known not to work with current ati-drivers. ati is working on it, claims next driver release will cure it.
sabayon has no desire to break others pc, if you do not use a current ati driver, install gnome-shell.
You might say, "Butt it works on my other distro"
sabayon is not "other" distro's, is a bleeding edge rolling release that imho, seems to be more stable than the other distros.
Often sabayon will be ahead of the hardware manufacturers.
Lots of reading available on all of this.
Is when people that do not take the time to read and learn ... then write blogs about their mistakes, blame it on the distro.
I am very passionate about sabayon, was my first linux distro back when 3.4e came out .... I have tried all of them over the years. Only distro that makes sense to me is a gentoo based distro.
I have a debian sid installed right now on a partition, I work with it and learn their ways, I simply shake my head at how difficult they make the most simple task's.
I am a firm believer that the best distro is the one that works for you, if you have older hardware, I am going to point you at debian.
If windows is what would do the job you need ... so be it.
Talk bad about sabayon, them is fighting words in my book
Hope you take the time to learn and use gentoo / sabayon.