For any interested, FreeBSD 9.0 final released Thurday, followed by PC-BSD 9.0, Isotope Friday.
I was a bit caught out by the speed of the follow up release, so only have a base install of free 9 at the moment. But can confirm I had no issues with the installer using zfs.
The immediate follow up of PC-BSD Isotope has meant I've been playing with this over the weekend; not much change from RC3, No bugs for me as yet - checked out the LXDE and KDE desktops so far, not tried gnome 2 or XFCE yet.
Just wondering how others have got on?