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...
At some point, hopefully RAM/Cummins is moving all the smog stuff post engine. Rumor was for 2019 models. However it may be a 2020 model in early 2019. Chris