We believe that all should have the latest A14 chipset. Perhaps the best, as Apple's tag suggests, one of the major features will be 5G inclusion. It is not certain if all three sizes will indeed come with next-gen connectivity functionality this would be cool, if pricing doesn't rise. http://iphone-2020-event05936.imblogs.net/44213419/you-have-just-been-told-the-day-exactly-when-2020-iphone-launch