Apple & Facebook

The relationship that Apple has with Facebook is strong. It's one of the strongest third party relationships on iOS. Only Facebook and Twitter have the integration that many developers would kill for, think notification center. Today Facebook is revamping Android to the point that it might as well be it's own OS. After today's Facebook announcement, should iPhone users feel left out? Do iPhone users even want more Facebook integration? Is Android only the beginning in Facebook's conquest of the mobile world? Thoughts?