I assume they will do boots/ankles like they did with Superman.
I don't think I've gotten around to saying it anywhere, but I am absolutely thrilled with Superman's ankle articulation. Enough to make poses like the one you referenced look great, and very very sturdy.
I didn't think Supes had much of any ankle articulation. At least mine doesn't. I really liked how Black Widows boots were done and was hoping HT would do similar with Bats.