So while on a business trip to Memphis, I got a chance to rent a 2017 Limited with LuxII! I was the first renter of the vehicle, fresh off of prep from the rental agency. It had 7 miles on the odometer when I got it.
It's a Granite Crystal with the V6.
I really like the exterior of the '17s. The grille stands out a little more aggressively, the bumper folds into the headlights like it should have beginning from the '14s (not with that stupid honeycomb piece Jeep used for a few years!), and the dark smoke lenses on the headlights really compliment the vehicle.
Jeep even re-did the "Grand Cherokee" logo on the front doors. I like it!
The 8.4AN still doesn't have Android Auto/iOS CarPlay, and it doesn't look to have a 4G phone (still has the 3G logo), but overall its faster and more responsive.
The interior seems to be largely unchanged from the '16s I drove. Auto Stop-Start seems to have improved a bit; I didn't notice the bump that I felt in the '16s when it restarted after taking your foot off the brake.
Only thing it's missing is Advanced Tech, or I'd drive it home and never give it back.
Couple pics attached.