These are the sorts of things that bug me:
- iPhone (the first model)
- iPhone 3G (the second model)
- iPhone 3GS (the third model)
- iPhone 4 (the fourth model)
- iPhone 4S (the fifth model)
So if the next redesign is iPhone 5, then that retroactively makes the iPhone 4's name pretty silly. But if they call it iPhone 6, everyone who doesn't have a sense of history will be upset.
Speaking of history, I'm glad that Apple finally has a device (the new Nano) that does all of the fun pedometer/run timing/achievements/etc. stuff that my Sony Ericsson W580 did four years ago. Maybe I'll upgrade. (I probably won't.)