A look at the Gnome shell and Unity desktops available in the Ubuntu 12.10 Quantal Quetzal distribution. Posted: July 24, 2012. At: 3:10 PM. This was 5 years ago. Post ID: 4306 John Cartwright July 24, 2012 0 Comments Ubuntu 12.10 (Quantal Quetzal) Daily Build. quantal-desktop-amd64.iso. Download the AMD64 ISO and see what you think of the latest Ubuntu distribution.