xtremelabs's blog: "Xtreme Labs Inc Updates"

Facebook iOS SDK 3.0 makes it easier for developers to integrate Facebook into their mobile applications. This new release comes with a host of major updates, from FBSession which lets an app manage the user’s session with ease to a bunch of smaller features like making it easier to create basic API calls to the Facebook OpenGraph. This version of the SDK also introduces blocks for a cleaner handling of various calls to Facebook.

Read More - http://tech.xtremelabs.com/facebook-sdk-3-0/