Lea: The Unity design process (and how you can play a part in it)

I'm using Linux Mint and had to carefully choose extensions to have a stable system, some of them were only working for a different Gnome 3 version. Support for automatic update will only be available starting from Gnome 3.4 iirc, so if you're patient enough you won't have to re-install updated versions by hand.

Frankly, I switched to Cinnamon and forgot about all that.

Rehdon