Reset the icons after upgrade
I've noticed screenshots of 10.10 with these rather cooler looking square icons. However when I upgraded my machines I didn't receive and icon upgrade. Is this because it wasn't a fresh install and is retaining old style data - or is this a custom addition?
Solution 1:
You're not missing anything. These icons are not the new default, but a new third party theme, the Faenza icon theme. You can grab them from GNOME-Look or the Equinox PPA.
sudo add-apt-repository ppa:tiheum/equinox
sudo apt-get update && sudo apt-get install faenza-icon-theme