5.0L EcoBoost? 3.5L EcoBoost in a Superduty? Interesting. I guess if it can make 600 hp in a Ford GT, the little 3.5L might make enough power for a Superduty. LINK
They are putting the EB 3.5 in the new Transit, which has some of the same use cases as the Superduties. So I think they expect it to hold up. It is detuned a little though.