[Marsh.]

Originally Posted by Morgan.

Chibnall has said he’s already working on S13 and has suggested he and the current TARDIS Team will all return.

I doubt it. I reckon it's been filmed so far ahead either due to nicking this year's budget for next after cutting an episode or because 1 or more cast members are leaving so filming their last episode now means they can go off and not worry about remaining free next year to film one more special.