Hopefully now that Jony Ive has absolute control over UI design and Human Interface, we will see the same tick-tock product design strategy that he does with hardware but now with iOS and OS X (redesign/refresh every other year and "S" updates in between)
As someone said it before, it's better to have to design gradually evolve over a few updates rather than just let it go completely stale and then do a radical redesign all at once.
As someone said it before, it's better to have to design gradually evolve over a few updates rather than just let it go completely stale and then do a radical redesign all at once.