As we previously detailed, Apple officially unveiled its Facebook integration in iOS 6 today. It is accessible through a system-wide Setting pane. One of the features includes the ability to post right from within apps, which is similar to the current Twitter integration. It also offers access to update contacts for adding Facebook usernames and photos to contact cards. The Facebook integration—alongside Twitter—is now baked directly into the Notification Center with small “Tap to tweet” and “Tap to Post” buttons.
Facebook is now accessible directly from within the App Store in iOS 6. It allows you to “like” and see apps that your friends have liked, and birthdays and events even appear in the iOS calendar.
Apple will make an API available to developers to integrate Facebook into third-party apps.