iTunes 9 is out now, and it has a feature that most iPhone and iPod touch users have wanted for a while. A way to organize your apps. Yes, you can finally set up which apps you sync, and also what page and position they will appear. Its about damn time.
Another feature that is a longer time coming is sharing of iTunes libraries. Yes, finally if you have more than one computer in the house, you can fully share all of their libraries on up to 5 computers.