Apple today announced a Sept. 19 release date for iOS 6 and a new version of the iTunes App Store, which both include Facebook integration.

As previewed in June, iOS 6 will include Facebook “tap to post” and sharing from Photos, Safari, Maps and other applications. Users can also post status updates using Siri. Apple has added Facebook contact info to its address book and Facebook events to its calendar app, and Game Center will import friends from Facebook. Across mobile and desktop, the App Store will include Like buttons so users can see which apps, music, movies and shows their friends Like.

Next week owners of the iPhone 4S, 4, 3GS, the new iPad and iPad 2 will be able to upgrade to iOS 6 for free. The new operating system will come preloaded on the iPhone 5 and new iPod Touch devices.

Images from Apple.