I was ready to buy a 2018 3500 DRW Longhorn until............ I read that for 2019 there was a change, maybe 2. The first change is the nav screen is going from the current 8.5" to a large 12" touch...
The current mirrors are great as tow mirrors. They just suck as regular mirrors. That's why so many Rams run around with the donkey ear look, including mine most of the time. The screen size...meh.
I'd be interested in how the emission system is set up and if it's an improvement. If there's no big news there it might be smart to save a few bucks and get a great deal on a 2018.