A change of The Doctor also means a change to the way The BBC is planning to air the next two series of "Doctor Who".
Since the show was rebooted in 2005, the first five series of the show aired in uninterrupted thirteen episode runs in the second quarter of each year (with a 'gap year' for the David Tennant specials).
However, the sixth series had a near three month break between new episodes right in the middle of it. The seventh series was officially split in half with a sixth month gap between parts.
Now, show runner Steven Moffat has confirmed the show is going back to an uninterrupted thirteen week run for the eighth series in 2014 and the ninth series in 2015.
Speaking with DWM, Moffat says Peter Capaldi's incarnation Doctor will be quite different to the last two:
"There would be little point in making as radical a change as we’ve made unless you’re going to go quite different with the Doctor.
The last two Doctors have been brilliant, and have been your 'good boyfriend' Doctors. But the Doctor isn't always like that. There is the sort of Tom Baker, Christopher Eccleston end of the spectrum, where he is mad and dangerous and difficult.
If we'd cast Ben Whishaw, you'd know what we were doing. You'd think, 'Well, that's another quirky young man with entertaining hair!' And he'd be a brilliant Doctor, but Clara would just think, ‘Okay, you've rearranged yourself a bit.'
I think it was time for the show to flip around a bit. The new version of the show is quite old now. It's very old… We need the kick-up-the-arse Doctor, in a way, to frighten you and make you think, oh, it's a different show again."