2012 has already seen a major update of what’s arguably the most important Linux desktop: Ubuntu 12.04 and we’re also seeing the most radical update of Windows with Windows 8 Metro coming since Windows 95 replaced Windows 3.1. So, which will end up the better for its change?
1. Desktop interface
Ubuntu replaced the popular GNOME 2.x interface with Unity when their developers decided the GNOME 3.x shell wasn’t for them. Some people, like the developers behind Linux Mint, decided to recreate the GNOME 2.x desktop with Cinnamon, but Ubuntu took its own path with Unity.
In Unity’s desktop geography, your most used applications are kept in the left Unity Launcher bar on the left.
Rest here