According to the Business Insider, Apple is building Facebook features into the latest operating system. This includes “contact sync directly into the iPhone software, so you can pull Facebook contacts into your iPhone’s phonebook.” The same report stressed that the new features can be unveiled at Apple’s WWDC (Worldwide Developers Conference) on June 7. This seems to be the day when the new iPhone will be launched.

Another important piece of information in this rumor is that Apple will or intends to integrate Facebook Connect into its software developer’s kit, so programmers can more easily add the social features to their applications – says Dan Frommer.

The thing is, he doesn’t know for sure, so what we know for now is that Facebook is a very popular iPhone app that makes a good background for this collaboration. Dan Frommer talks about Apple building “some sort of Facebook messaging” feature. This move is coming in response to the market’s pressure. The Android already has this feature and it works really well, Microsoft is also planning a strong collaboration with Facebook, the social network tool for its Windows Phone 7.