Not sure, but the 5.0L is emission compliant enough for Ford to keep offering until the end of the next gen Mustang. As we know, GM updated their V8s for the next gen, spending about 1 billion dollars, with the first of that compliant V8 coming on-line in 2028 in the new Corvette and then their trucks.
Totally agree on RAM not offering an all new V8, I blame Stellantis corporate culture that may not understand Americans well enough. The previous FIAT president understood American truck culture, stated it was like owning a horse for a cowboy, lol, not too far off.