Even though there technically is no connection between the releases in the 11.x series, I'm still very happy to see 12.x out now. (11.0-11.4 all had been under Novell, used KDE4 by default and used GNOME 2)
Something I've learned about openSUSE 12.1:
1. To imitate GNOME 3 as much as possible
Unlike previous changes to the GNOME default look, it is impossible to bring GNOME 100% back to the way to was before. However, you can make it look much more similar.