Facebook today released Facebook SDK 3.1 for iOS, which includes support for iOS 6 integration and more native UI controls that developers can plug into their apps.

The update builds upon much of what was announced in July with the 3.0 beta version, but now that iOS 6 is available for all users, development will ramp up. With the new iOS integration, developers can use the native Facebook Login so users don’t have to switch between apps during the auth process. There is also an option for apps to post to Facebook using the new native share dialog. Both features are seen below.

Today’s SDK update also includes ready-to-use UI controls — profile picture control, Friend Picker and Place Picker – which Facebook introduced this summer. There also seem to be additional login controls for easily building login and logout experiences. These components allow developers to begin from a template rather than building each from scratch. For example, the friend-picker tool gives users a familiar UI to invite their friends to use an app. It will even allow developers to filter friends by device and app auth status, so that users don’t send invites to friends who don’t use iOS devices or who have already added the app.

Version 3.1 brings improved API support and session management, as well as a new ad analytics beta product for developers to understand the effectiveness of the mobile Facebook ads they run for their apps. More information is available from the Facebook Developer site here.