That engine would need to have some sort of proven reliability before I'd even consider it as an option, much less pay extra for it.
-For reference, just look at a few Toyota Forums and see how well the new twin turbo V6's are working out on the new redesigned '22 Tundra's. Lots of folks have theirs sitting in the shop with turbo issues without any improved parts available. Plus it seems gas mileage is just barely better than the I Force 5.7 V8's they replaced. You place these small displacement 6 cylinders in heavier vehicles and expect decent gas mileage...think again.
I will admit though, 500 hp out of a 3.0 liter engine is pretty impressive. But OTOH, I don't see these twin turbo 6's going over 100K miles trouble free like a lot of V8's do.....but we'll see....