"Planned obsolescence" will always exist at any product introduced by any company. This is inevitable. Apple might just accidentally amplify this statement, resulting higher concentration of caring and discussions.I do firmly believe this, but we will have to wait and see. All I'm saying is, prepare for some potential outcry and the same old tired argument about "planned obsolescence" when Apple pulls the plug on two generations of A-based processors with one release.
Whether Apple ditch two generations of chip in one stroke or not in this iOS 10 doesn't really matter that much for me now. But that of course doesn't mean others don't take care. Perhaps they will just stick at a version supporting maybe iOS 9 on their productivity apps. Developers will not need to update it for quite a while until all old devices are not usable anymore. Reaching this would gonna take another half decade if not more.