I'm building several different projects for iPhone (and iPod Touch, I suppose) in XCode. What is a reasonable iPhone OS target deployment version?
For instance, can 2nd generation iPod Touch devices upgrade to iPhone OS 3, so that I could be using iOS3 as reasonable minimum and still target the iPod Touch (figuring it's OK to ignore those who don't want to update their OS)?
Part of this question, I suppose, is what is the market share of the different iPhone OS versions among deployed Apple devices (iPhone/ iPod Touch/ iPad)?