I think it's likely to be a Channel 4 decision rather than production. And we all know what a mess they're in.
8 Out Of 10 Cats Does Countdown - Series 23/24 Page 2
New series starts 19th July. No details as to episodes, and as such guest line-ups, yet. https://digiguide.tv/programme-details/Channel+4+HD/19+July+2024/20:00/8+Out+of+10+Cats+Does+Countdown/Quiz+Show/
Might be worth starting a new thread nearer the time.
You can find all of that information here: https://www.comedy.co.uk/tv/8_10_cats_does_countdown/episodes/25/1/
Wow. I get really confused by these.I see they're on Channel 4 so assume they're new ones. It never seems to say if they're repeats until the date at the end.