Over the last 3 decades they haven't offered a new motor on the new generation. I suspect it won't be any different. Not trying to be negative, but with Dodge doing away with ICE and no Camaro why upgrade further beyond the Coyote? It may be a little different, with Dual Snorkels, but not...
Perhaps a valve drop option like the 2.7 Ecoboost in the Bronco on the Coyote?
I have a 2019 low miles, no intention on buying a newer mustang unless they go to the 6.8 L or 7.3 L V-8 and offer more HP. 5.2 Predator would be a nice option too, but I don't see that happening.
May be...