You can also choose to update your contact records with their respective information from Facebook. Be careful before choosing that option. My colleague Lex Friedman, who is more daring than I, ended up having his contacts' Facebook.com email addresses added to the contact records. In addition, you could also end up with a Facebook Friends' Birthdays calendar, which may lead to many more alerts than you'd wanted about great-aunt Mildred's pending 87th. On the upside, that information should stay in sync, which means that if your friend changes their phone number, that change will be reflected in your Contacts, which can be handy.

When posting to Facebook from Photos or updating your status via Notification Center, you'll have the option to choose which groups you want to post your message to, as well as add your location. (In my quick test, it only gave me nearby known locations, as opposed to iOS's Twitter implementation, which actually gives your exact location.) And, of course, you can have Siri post to Facebook for you.

Finally, you'll now find an integrated Like button under the Reviews tab in the App Store, iTunes Store, and iBookstore, so you can share your tastes in media with the world.

The Music app isn't a focus of iOS 6, but it has gotten a cosmetic update on the iPhone, as well as some slight feature changes.