Great, just in time with gnome's decision to finally remove "fallback"...
This decision is going to be challenged again soon. Gnome3 has nothing whatsoever to do with gnome2, as desktop environments are concerned; from an usage point of view, it is the same as if the distro suddenly decided to go with KDE, CDE or whatever.
At least Mint tried to mitigate the mess with many forks to restore the "classic" experience on top of gnome3.
Also the graphic requirements of gnome3 are a recipe for disaster, especially for a distro which emphasizes conservative "stable" choices.