As of yet, there has been no news regarding a new companion, but there is still plenty of time for that to unfold. For now, Capaldi has said:
"We’ve just had some brief talks about it, we haven’t actually chosen someone yet — that I know of. I would expect that I would meet them before we finalised all that... we’re looking for someone different."
We will bring you the latest filming and casting updates as soon as we hear them, so stay tuned.