I’ve just tried the alpha of Fedora 17 to see if the GNOME 3 software rendering works and it did. You may recall, since updating my graphics card I’ve been forced to use the fallback mode on Fedora 16. I’m quite keen to move back to proper GNOME 3, which looks like it will be possible when F17 is released.
On a VM it seems a little on the slow side, so I hope this isn’t an indication that it will be annoying on my desktop. I guess time will tell. Fingers crossed though.