2018/2019 Rams

I just picked my 2017 Ram up a month ago. It was a dealer "demo" with only 46 kms. No zeros after the 46...literally only 46. Downfall with that is it is considered a "used" vehicle so interest rates are higher. It was a screaming deal (I think) and got the crew cab too as I didn't want grandbabies kicking the hell outta the seats...loads of room. 5'7" box tho...
19 s are on lots here, so 18 demos might be available soon??
Kinda curious... has the 2018 rams ceased production? I am thinking of trading my 17 ram in for one with a larger cab. Quad cab is just not big enough with the carseat in the back. Whan i got the 17 it was a leftover, year end sale and got REALLY good discounts on it. Are the 18s going to be that way soon, or do i need to wait until December again?
Thanks Paul