I know, I was only thinking this morning that there seemed to be no rumoured successor whatsoever, so we'd have him FOREVER and EVER. And woke up from my afternoon rest to find this, and was pleased to have been proven wrong almost instantly.
Clearly the whole of fandom thought this REALLY LOUDLY! ;) (I feel bad about being so negative, but...)

I am sad Jodie is going, hugely relieved to have an end date on Chris Chibnall's era, and very intrigued as to what and who comes next now - like, 2023 is the anniversary year as well! Is there some plan? Colour me intrigued all right.
I agree with all of this!