I actually think this is ready for release.
As far as the base system, yes so far I haven't found any bugs in the cinnamon-64 bit yet. But as far as some compatibilities with packages in the main repo, I've already got issues. My first issues is cario-dock just plain refuses to work as a standalone session. I've tried this in Ubuntu 12.04 after bringing in cinnamon and it worked great, but out of the box it doesn't work at all in Mint 13. Second I notice that the repo isn't a direct copy of the ubuntu precise repo. PCSX-R is still the old version, but precise has the newest, but yet I'm thrilled to see the latest XBMC making into the repos finally. And on another personal note I see the user groups GUI has been removed from the admin bar. Guess I gotta add myself to the audio group via terminal.
All in all, I like the look and feel much better now! Cinnamon has come a long way very fast! Going to test out the MATE version too!