"No. That's wrong. Everyone only buys the iPhone because of how it looks. The iPhone 4S wasn't even a new phone. It was the exact same phone as the year before. If Apple thinks they can sell the same phone for three years, they have another thing coming. Apple is doomed. It's the same phone. No, it's the same phone. Same…"
"Similar design appearance"?, yes. "Same phone"? Hardly. Compare specs. NOT the same at all.
Aside from some extra screen resolution and real estate, isn't EVERYTHING that really matters contained inside the phone? CPU, graphics, memory, battery life etc.? You know, all the things we can't usually see? ANd then there's the software, where the majority of the real "evolution" happens...
If the design aesthetics of the outer "shell" is already working well, defines it as an iconic brand, is IMMENSELY popular (the world's single best-selling smartphone handset EVER, OF ALL TIME)… is instantly recognizable, differentiates it from the rest, then WHY would you ask or expect Apple to change that?
What would be "better", not just "different"? More curvaceous lines? A curved backplate maybe? We all saw that sexy 'teardrop' rendering claiming to be the iPhone 5, and liked it… maybe something like that?
Personally, I'm not that into "different" just for the sake of it. This device calls for a balance between form and function… Apple tends to stay with what works.
The same is true of their laptops. Aside from some reduction of dimensions and minor design tweaks, Apple has kept the basic form factor for the Mac Book Pro for how many years now? How many iterations? The unibody design… essentially the same, year after year. The changes that really matter? Overall performance, battery life, weight… the recently slimmed body is a 'further refinement' more than a 'complete redesign'. I expect more like that with the iPhone.
I doubt seriously it will signal "doomsday" for Apple and the iPhone...
Why shouldn't Apple sell a phone that keeps its good looks year after year, while ramping its performance and features on the inside?