I highly doubt Jack was gonna appear in this, it was made to celebrate the 50th anniversary of the Master's first appearance if Jack was gonna appear it would have likely just been a cameo, anything more than that would have taken from the celebration of the Master.
The Monk is Missy's new companion Volume 3 and the good news is its still Rufus Hound playing him despite his recent Twitter scandal that got him kicked off Dancing on Ice
https://www.bigfinish.com/news/v/missy-s-meddling-once-again
Yeah that's just a place holder cover. I'm sure at least one of the Doctor's will be in it though. David hasn't voiced the Second Doctor for Big Finish but did voice a clone of the Second Doctor in Tom Baker's The Nest Cottage Chronicles for the BBC.
So in the article that announced the return of David Troughton as King Peladon in the upcoming Peladon box set Big Finish teased the inclusion of "Various time travellers also turn up across these tales – and some of them have very familiar faces..." who do you think they will be? My guess is...
I'm assuming it'll be out later this year, think this is just another recording that was delayed because of COVID, that's what I'm guessing until I hear otherwise
Not when I went to pre-order it the day it was announced it didn't and the news article about the release doesn't mention a release date either. Also IF it had been cancelled like you seem to think they'd have announced it, wouldn't be allowing pre orders still, would have removed the page and...
That's not true though, I went to pre-order it the day it was announced and the date was TBA then too. It's likely they haven't or have only just started recording it due to Bonnie Langford's availability during the lockdown, she's not done any audios during lockdown so probably wasn't able to...
The lack of a release date when it was announced is why I've not pre-ordered it yet. They were likely just waiting for one of the actors to (safely) available to start recording it, hence no release date.
They didn't announce a release month when they announced the story https://www.bigfinish.com/news/v/it-s-all-in-the-mind-of-the-hodiac I also doubt they'd be allowing people to pre order still if they'd cancelled it too