I think rolling release as as "stable" version is essentially somewhat a self contradictory request. Rolling releases are by definition very fluid and they do require manual intervention or extra maintenance from time to time simply because the latest versions are sometimes not the most stable versions and take time to test and mature in the real world and users who want the very latest sometimes have to suffer through some amount of issues and probably are willing to go through that hassle. There is an effort to make Rawhide more usable and reduce the level of breakages there to serve partly the audience that wants rolling release but mostly in the idea that development versions being more usable would invite more testers to provide early feedback and subsequently make the actual stable releases .... more "stable".
Fedora, I don't think really has the resources to maintain one more branch to satisfy the users who want a rolling release and a rolling release does not seem to be want all the users or even majority of Fedora users want . So within the resource contraints and in the interest of Fedora as a community, I think focusing on Rawhide for now makes better sense.
I has upgraded my fedora 17 to 18 using FedUP and preugrade online plus i have the unstable kde repo enabled wich automatically installed kde 4.10 RC all and all was a pleasant update, all i had to do was to remove old .kde config file in /home directory. And today i just received update to latest 3.7 kernel.In my experience fedora is almost like semi-rolling distro i dont know other distro that updates kernel so often.I myself did enough distro hopping but i like fedora for bleeding edge software the provides. And i only speak for myself in my experience on my hardware is pretty stable, no crashes to make my system unbootable, kde runs very well, small memory footprint on my AMD thinkpad edge13. So i myself recomend http://fedoraproject.org/wiki/FedUp. In closing for me fedora is the best of both world cutting edge enough and fast kernel updates and not boring at all.
If you want "stable rolling release" (as far as that is even possible), Arch is probably the most popular choice.
If you want unstable rolling release, there's Fedora Rawhide.
Everyone should be served with this, I don't get why people are still demanding more than that??
well what i ment is that on ubuntu i always had to use ppa`s for kernel updates and as i see it fedora updates packages more often, and that`s a thing i was looking for.i don`t mind adding a few repos googling a little if something doesnt work properly like my sound card couse there is a known workaround the problem is the same in all distros. In my opinion for a bleeding edge distro its pretty stable on my hardware so i am really satisfied plus i like the vanilla kde experience that fedora provides.
Best graphical installer I've ever used is OpenSUSE - really polished... I haven't bothered trying Fedora for many years - but they could certainly take a leaf out of the SUSE camp...
I definitely appreciate the fact that Fedora keeps the Kernel relatively up to date, as it means I do not need to wait forever to get graphics driver updates.