Here are several aesthetic changes and new functionality in the latest version of iTunes application.
The first thing you will notice with this latest version of iTunes is that the icons on the left panel has all lost their 3D/colour effects. Many critics have complain that the change is ugly, this may be true, but I think the new design places the focus back on to the content: music tracks, videos, apps and the iTunes Store.
The problem seem to be the inconsistent applications of these 3D effects. Some controls have gain the latest Apple aluminum hardware look but others has the Aperture styling. These inconsistencies make the application feel unfinished, and continues the theory that iTunes is Apple’s platform for experimenting with OS X UI designs.