I haven’t finished the book yet or anything, I just wanted to get this question out of my mind as it has been bugging me a while. I am still new to iOS development, but I am really interested and love it so far.
What I would like to know is, as an iOS developer should I think about supporting older iOS versions? Those before version 4.x? Since I am new, and when I do write an app it will be completely new so should I just focus on newer iOS versions to be able to support newer features?
I guess I would like to know if Apple supplies information or statistics on the update rates of their OS. Do the majority of iPhone users actually update (if they can) very quickly? I would assume these new delta updates in iOS 5 will help with that greatly.