Nissan (also other car manufacturers) have entered into a partnership with Apple to better integrate Apple CarPlay with their infotainment system and the digital cockpit/combimeter in future models (no upgrade/updates to existing systems?).
Heating controls, mileage, speedometer, engine temp, fuel consumption, etc. will all be integrated into Apple CarPlay.
You will also be able to customise each screen with your own personal widgets.
Apple is reinventing the driving experience with a new generation of CarPlay features, deeply integrating the functions of the vehicle with your iPhone. The new system is reportedly capable of controlling the entirety of the vehicle's infotainment systems, regardless of the system that it is being run on, effectively making your phone the "core" of the in-cabin systems.