Did David already say something about 13 actually?
Yeah he’s made a few comments about the casting at sdcc:
“I’m very excited! I’ve known Jodie for a long time, and I got an inkling that this might be the way it was going. I spoke to her and she’s just so excited and so up for it. She’s a great choice, it’s gonna be magnificent. I got a phone call from her just before it became public, and I thought, why are you calling me, is this what I think it might be…? So yeah, it was exciting.”
“Well, I know Jodie very well, I’ve known her for years, and I can’t think of a finer choice, I’m very excited. Because she is a great actress, and that’s what that part needs; the better the actor, the better the show. And Jodie is one of the best actors working in Britain right now, so I think the show has lucked out.”
“…Doctor Who, another show with a strong female lead…” *
* according to Radio Times, he said this last one during the Call of Duty: WWII panel at sdcc, but I just watched it and didn’t hear it. Not sure if I missed it or if there’s a different panel RT was referring to.