I don't find that very perplexing. They have two models instead of 3, and will probably explain the story around them.It's cluttering the devices. Each device should be distinctly known. 10 S, 10 S Max, iPhone 10 R, iPhone 10, iPhone 8+, iPhone 8, iPhone SE, iPhone 7+, iPhone 7, iPhone 6S+, iPhone 6S?
Notice how perplexing it gets once iPhone X/10 comes along?