It has been almost exactly a year since I reviewed Zorin OS 6 Core, which was based on Ubuntu 12.04 LTS "Precise Pangolin". The new version is based on Ubuntu 13.04 "Raring Ringtail", so I'm reviewing that now.
Zorin OS is based on Ubuntu, uses a heavily customized GNOME 3 environment with Compiz as the WM and AWN as a panel. It also aims to look as close to Microsoft Windows as possible; at the moment, the target is specifically Microsoft Windows 8. There haven't been a huge number of changes from version 6 to version 7 of Zorin OS, aside from some theme and branding updates along with the usual package updates.
rest here