If you're stuck at work and can't get away to take a peek at the new iTunes 7.2 update, we've put together this handy gallery of screen shots showing you the new 7.2 features. In iTunes 7.2, you'll find a new link to iTunes Plus in the iTunes Quick Links. Select it and iTunes will prompt you to update preferences (whether to use iTunes plus for your albums whenever possible) and your licensing agreement--that's another agreement on top of the one you had to agree to just to install the program.
TUAW's 7.2 gallery is a work in progress. Expect updates throughout the day as the new features come on line.