Apple is alwaya trying to make something new and better. I have to hand it to them for that. They're innovative and trying hard to stay at the front.
I don't think Apple needs product diversification. But that's a mark of a great company. They are always trying to improve, innovate and push things forward. I'm sure they could keep pushing out great ******s and computer products and they'd still make a fortune. But they've got a lot of competition from Google and Samsung, so they're trying to get into new areas and branch out. It's a good strategy as long as they're realistic and don't over extend themselves into areas they won't be any good at.