According to TechCrunch editorial sources, Apple will introduce a "deeper integration with Facebook" in the sixth edition of iOS for iPod, iPhone and the iPad.
Cooperation Apple'az Facebook is supposed to be officially announced at the WWDC conference in June. We do not know specifically, what does this involve deeper integration. It is possible that it is the ability to log on to the service using facebookowego account, and the ability to easily share content on Facebook.
Interestingly, the only concern about TechCrunch IOS. OS X desktop system is to remain at the current integration with Twitter.