Apple designs it's entire platform to basically drag developers to using the latest SDK and codebase. I can't even download the iOS 5 simulator in xcode right now. Shit starts breaking in the newer versions of things when you use the older way of doing stuff, and sometimes the decision is an exclusive or. Support %95 of the userbase using ios 7 & 6 and frankly give yourself less of a development headache or support ios 5 laggards who are less likely to pay for things as a group anyway.
Thanks for the info. Obviously, if it's literally a case of 'support 95% or support 5%', the choice is made for the developer. I assumed 'support 100%' was not impossible, or even particularly difficult, but I stand corrected. Although I would like to note that some developers do still support iOS5 - somehow.
