Freenas 9 is already out for some months. And it is running fine like I used to run Freenas 8.
It boots faster, Creating new jails is very easy now. It goes automatically when you install a new plug-in.
And one of my favourites: Plex media server http://www.freenas.org/whats-new/2013/09/plex-on-freenas.html . Flex has clients for almost any device: whether it is you pc, smartphone, tablet or smart tv. So FreeNas has become a very nice media server.
But they didn’t forgot the profesional too. Freenas has new features like encrypted volumes and much more. Just check it out on http://www.freenas.org