Here is a side profile of the Prius III vs Prius II. You can definitely see the angle from hood to front windshield has been decreased. They also eliminated the step in the front bumper. And, is it me or does the front wheel's rear fender well appear to be slightly tucked in like the 1st gen Insight, or is it just the light? Other than that I see a shark fin antenna instead of a stubby one. Alas, still no wheel skirts.
If someone could overlay them over each other that would be great. I don't have the software to do it atm.
Prius III
Prius II