So, time to speculate how the change will be handled in show?
I see two possibilities:
1) It's never mentioned, the new Doctor looks in a mirror, says "Thank god I'm still not ginger", and then carries on exactly as a male Doctor would.
2) It's a Really Huge Deal and we're reminded every week that I Don't Do It Like That Now, I'm A Woman.
Which do people think it will be? And regardless of that, which do you think it should be?