I know they're not going to do it, but I really hope that the outfit he's wearing in the first image is his actual doctor outfit.

Also, not going to lie: kind of astonished that it wasn't another white guy. If they thought the pushback they got from casting Jodie was bad, this is going to be EPIC. Also surprised that he's so young.

also also, happy to see the Big Finish announcement at the bottom of that:
https://www.doctorwho.tv/news-and-features/jo-martin-and-sacha-dhawan-enter-the-world-of-audio

It does, alas, mean that Sacha is done with the Master on screen, which isn't surprising, but it would have been fun to see the two of them up against each other. For entirely not-at-all shallow reasons, of course.