Here's a write up by CarScoops about the TNGA-C Platform (the platform the C-HR and Prius sit on) and it details a few changes and how it's going to benefit Toyota.
Toyota Details The C-HR?s New TNGA Modular PlatformToyota’s New Global Architecture, which currently underpins the latest Prius and the eagerly-awaited C-HR, aims to play a fundamental role in the company’s goal to offer more fun-to-drive cars.