I feel like I have a new phone with few new features. Or, maybe, it’s like getting a new, really well thought-out interior for your current car. Same engine, acceleration, visibility, lights, gas mileage, stereo system, etc. The knobs are more ergonomic and current, the seat belt warning a little different. Some things have moved around probably for a good reason, but it feels foreign. The old coffee cup wedged under the passenger seat is gone. It was free, so thank you Apple. More importantly, it’s the basis for a lot of great innovation going forward (I wish I had a 5S).