The rumor of when Ram is swapping to a new cab has swirled since the 2019s came out.
General consensus is that eventually FCA will put the current 1500 cab on the HD Chassis. At that point a quad cab would be possible I guess, although I don’t see why they would offer it since they could have done that on the 4th Gen trucks and elected not to. I doubt they would offer any type of larger quad cab, as they already have the crew cab option. Some fear that by swapping to the 1500 cab that the Megacab option will go the way of the G56 transmission. Personally I want them to swap to the 1500 cab just so I can have the panoramic sunroof.
As for transmissions, hopefully FCA just offers onsolid transmission. No more of this HO vs SO and each having their own transmission nonsense. I know Allison and ZF are testing behind the Cummins. I’d rather see a ZF 8 speed myself, others want to see FCA match GM and Ford with their 10 speeds but that seems excessive in my opinion.
In any way, as soon as FCA offers a new transmission behind the Cummins and the panoramic sunroof option, I’ll be doing my first custom ordered vehicle. Until then, my 2016 is nice enough for me.
I doubt you’ll see anything new for 2022 model year. FCA needs to get production back up to pre-Covid before they go making massive changes to a 3 year old model in my opinion.