Available for download system images Ubuntu*Pack 14.04 for i386 and amd64 in earlier editions submitted:
Unity - interface of the company Canonical, optimized for computers and tablets.
Flashback (formerly Classic) - classical view desktop style GNOME 2.
GNOME 3 - vision from the developers desktop GNOME. Another of his name - GNOME Shell.
Cinnamon - interface close to the style of Windows using GNOME 3.
and two new:
Classic 3 - version of the classic presentation of the GNOME desktop GNOME 2 in style GNOME 3.
Razor - modern, comfortable and fast interface that works well on low-end PCs.
Systems are self-contained solutions for the new installations as well as computer equipment for your home or office computer.
Learn more details here