After waiting ALL DAY, iTunes 10 is now live! so go and get it!
iTunes 10 includes Ping, a new social music discovery tool that is similar to Twitter and Facebook, only created specifically for music built into iTunes itself. You can follow friends and artists and be followed to share your music tastes with friends and family. You can also view upcoming concerts and events happening near you. The Ping service is available in 23 countries and to all 160 million iTunes users.
The new iTunes also promises better syncing and includes a new capacity bar, so you can tell how much space you have on your device in real time!