iPhone OS 4.0 May Have Facebook Integration

There are still a lot of hidden details being revealed in Apple’s upcoming iPhone OS 4.0, and some of them might including deeper integration of Facebook. In particular, there seems to be evidence that Facebook events, contacts and possibly email will be handled at the iPhone User Accounts level.

Engadget dug through some some of the .plist code files from a jailbroken iPhone running OS 4.0 and found several supporting details including mention of “SocialKitInternal.framework,”