I doubt it. Social is pretty overrated. While sharing is still important to many people, it seems that great software and the ability to access quality content is far more important than what my casual aquaintences are up to. Anecdotally, my 'friends' seem to be less social online and less willing to share every little life detail despite the increases ease of doing so.
The analysts are wrong. It's like saying the Mac needs to be more social to be successful in the future. Besides, how much more social Cana smartphone get? It's a phone and a pocket computer already. Besides, Apple is primarily a hardware company and secondarily a content agency. Their revenues don't depend on advertising, which is really the only business model social currently has. The last thing Apple wants to do is be an advertising company.
Still, I am happy with Apple getting friendly with Twitter. I find Twitter to be much less obnoxious than Facebook. API and infrastructure debacles aside, Twitter seems a lot less arrogant and threatening than Zuck and Co. Twitter, for example doesn't suddenly make your direct messages public or change privacy settings in onerous and unexpected ways.