they've done it for the ipad mini and the macbook pro as well. their product line involves one retina and one non retina model ( except for the iphone). i belie

they've done it for the ipad mini and the macbook pro as well. their product line involves one retina and one non retina model ( except for the iphone). i believe it's done that way purely because it's easier to explain to people when it's consistent. next year will probably see the switch to pure retina across all product lines.