There’s more to making a June release date for the iPhone 5 possible than just production considerations. Apple and its mobile carriers would have to offer iPhone 4S subscribers upgrade waivers — and that may not be fiscally possible.The iPhone 5 release date still remains a contentious issue, with the tech community still deliberating over whether Apple will choose to release the new iPhone at this year’s WWDC in June, or wait until the fall in order to put it on track with a 12-month release window...