I agree with what you said here, and upvoted, but I'm not sure that it's a correct statement. What appears to be the case is that iPhone OS devices will be cons

I agree with what you said here, and upvoted, but I'm not sure that it's a correct statement. What appears to be the case is that iPhone OS devices will be considered software-obsolete in the third year of availability, if we're extrapolating the trend from the limited data we have. That is, I fully expect that my iPhone 3G will not run iPhone OS 5 and that the iPhone 3GS will not run iPhone OS 6 (or whatever number they're up to in two years). It's still a solid story for iPhone OS development compared to other handsets. It appears to be one of the lessons that Apple took to heart from the PalmOS example (they were at 160x160 for years, then 320x320 and only a few folks took it beyond that).