apple can't win either way.
if they leave the design the same, people will complain that they're stuck in the past. if they update the design, people will bitch and whine to no end about how it's not as good as the old design. (ipod shuffle)
New models and revisions of products are often just a reduction in the cost of manufacture, irrelevant of the 'new feature list'.
They 'can win' if they carry on doing what they're doing. They'd do even better if they spent less time with their ridiculous marketing and more on the phones OS.