From what I've heard from a few reviewers who asked the question,
Wireless Carplay has not been included because a contractual dispute with the Navigation provider, NOT because the head units are incapable. Hyundai/Kia has offered
wireless Carplay in the past, so there is no reason from a technical standpoint it isn't offered now. This isn't a case of Kia dropping the ball or not listening to customers-- I think there is more at play here.
I suspect (and this is a complete guess) that
Wireless Carplay/AA will be added eventually via downloaded update. Why it's taking so long, I have no idea (perhaps they're waiting on the contract to expire, working on the update patch, etc.).