As far as I've heard he's not. He's taking two years out to do other things. It's not good for actors to get stuck as one character. So they’ll put the show on hiatus until he goes back, because he’s a great doctor. Anyway, that was the last I heard on the subject.
Sure a girl doctor would be fun to see but it just wouldn't be the same if the Doctor was saving the world in a bra...:lol: now there's a weird mental image.

