After delaying the release of iTunes 11 by a month, Apple has released the much-anticipated update for both Windows and Mac users. The new iTunes is redesigned from the ground up, with a completely new look and feel. Along with the new look comes some new features: deeper iCloud integration, a new MiniPlayer, and a feature called "Up Next."
Up Next is more or less a living playlist within iTunes. You're able to add, rearrange, edit, and delete songs from the Up Next queue at any time.