Earlier quoted context omitted.
The regular 15. And 3.0 also supports much faster charging. Maybe most won't care, but I still think it's disgusting and pathetic for a company this size with products this expensive to cheap out by using USB 2.0.
They indicated in the pitch for the Pro that they added logic to the new CPU to drive USB 3 at 10gbps. The non-Pro is using last year's CPU, so while yes I guess that means they did "cheap out", I imagine the cost to include 3.0 on the non-Pro is pretty high and most people don't care.
Almost all the people on this forum are in the target market for the Pro. The standard iPhone is not built for us, nor will most of its users have a problem with 480Mbps-over-wire transfer speeds.