Been waiting for this one, so have installed it onto my main Linux desktop (which was previously running 12) now I’ve finished work. I used the “preupgrade” path which was painless and efficient.
I chose to upgrade the existing system rather than fresh install, all my apps and settings were retained, even BOINC fired up automatically.
First impressions are it’s polished, very nice. New icon library, new graphics drivers, all very good. App set is very much as it was in 12 (as you would expect) with new versions as appropriate.
A review of new features (KDE version) can be found at Brizoma. Screen shots are in my Picasa albums. Small review poking Ubuntu in the eye on The Register
Installed hardware is am AMD X2 5200+, 1GB RAM. ASUS Pundit all in one with ATI graphics. And it flies
Six mojos out of five