Got it installed on my '16 with nav. The process was seamless. I actually had it installing during my drive home from work and it completed about 10 minutes before I got home.
AA is pretty neat, but one small UX annoyance I know is going to drive me nuts is the system navigates you to the AA home screen when you are in SYNC and tap the maps icon. This seems pretty stupid since you also have an icon for AA. Hoping it's just my phone or something that will get fixed with a patch. If not, it's a pretty glaring design fault.
I forsee issues with having my ipod classic also plugged in through USB. I had to unplug it during initial configuration, but it seems to play nice when I've since disconnected and reconnected my phone a few times. Hopefully I just need to disconnect the ipod when installing new apps, etc.
I'll give the rest of the AA features a run tomorrow to see how well they compare to SYNC. Being able to "okay, google" is a nice touch, for sure.