At its annual iPhone launch event in Cupertino, California, today (Sept. 10) Apple unveiled its usual spate of new gadgets and services, but it’s getting harder and harder to differentiate between one product in the same family and another, and even completely different products. Over the years, Apple has come up with iconic, monolithic product names that have inspired legions of copycats—remember in the mid-2000s when just about every new product seemed to be prefixed with the letter “i”? When someone says iPod, iPhone, or Apple Mac, you can probably form in your mind a what that looks like.