Apple says that the company will not follow the current PC trend of adding a touch screen to a notebook or desktop. In an interview with Macworld, Apple software engineering Craig Federighi, said: "It's obvious and easy enough to slap a touch screen on a piece of hardware, but is that a good experience?" senior vice president of software engineering Craig Federighi said. "We believe, no."

Federighi says that the computer has been honed over 30 years to work perfectly with a keyboard, mouse or trackpad and changing that formula would make no sense.

That's also why Apple's operating systems are not going to merge. "To say [OS X and iOS] should be the same, independent of their purpose? Let's just converge, for the sake of convergence? [It's] absolutely a nongoal," Federighi said.

"You don't want to say the Mac became less good at being a Mac because someone tried to turn it into iOS. At the same time, you don't want to feel like iOS was designed by [one] company and Mac was designed by [a different] company, and they're different for reasons of lack of common vision. We have a common sense of aesthetics, a common set of principles that drive us, and we're building the best products we can for their unique purposes. So you'll see them be the same where that makes sense, and you'll see them be different in those things that are critical to their essence."