From what I understand, the main MIB II processor upgrades apple to the DNS system (rather than the DNS Pro) - someone correct me if I'm wrong.
The Discover now has a 6.5" (from 5.8") as standard, and includes the car-net online services, as well as app-connect. The screen resolution has also been bumped up. Oh and I believe they've finally ditched the propietary cables for USB socket!
Faster processors. The new generation of devices is characterised by better system performance. Consider the “Discover Media”, the radio-navigation system with 6.5-inch display: Compared to the first generation, performance of the CPU (main processor) was more than doubled from 950 MIPS (million instructions per second) to 2,500 MIPS.
The DNS Pro, from what I understand has mainly seen the online services finally being included on UK cars, as well as app-connect as an option (CarPlay/Android Auto as well as MirrorLink).
My car has arrived to UK, but am holding off until 65 plate in Spetember. I've ordered the tech pack (so DNS Pro) and also app connect. I'll try and post impressions once I get car ..getting anxious already!!