I have to agree with sponkey on this. If the GT will be getting the new 5.0, I'm not sure what Ford could do to offer a new Mach 1 or Boss unless it was an appearance/bolt-on package of some sort. The supercharged 5.0 is already reserved for the GT500/Cobra, so that doesn't leave an intermediate V8 motor option open for another SE Mustang.
And don't bring up the 6.2.......because I'm getting tired of telling ppl that that motor does not physically fit into the current Mustang chassis.
FWIW, while I think it's a nice rendering....I'm still a bit partial to this one (even if the chin spoiler is a bit overdone):
It's just much cleaner and more elegant.