You can read the full details here but basically seven parts released from May to October next year, with an eighth part they're calling a "final coda" not releasing until November 2024*
Everyone from Tom Baker to David Tennant will be in it. Eccleston mentioned recording with David Warner for the 60th before he died so he's in too and no doubt David Bradley, Michael Troughton and Tim Trelor as well as 1-3.
*I'm calling it now, that will be Jodie's Big Finish debut. (a) Because unlike Smith and Capaldi she's been very clear about wanting to play the part again and (b) Nick Briggs said a few months ago that most of it was recorded but they couldn't finish it until after October. (Due to the way their license works they can't do anything with the current Doctor until after their last episode airs.)
Everyone from Tom Baker to David Tennant will be in it. Eccleston mentioned recording with David Warner for the 60th before he died so he's in too and no doubt David Bradley, Michael Troughton and Tim Trelor as well as 1-3.
*I'm calling it now, that will be Jodie's Big Finish debut. (a) Because unlike Smith and Capaldi she's been very clear about wanting to play the part again and (b) Nick Briggs said a few months ago that most of it was recorded but they couldn't finish it until after October. (Due to the way their license works they can't do anything with the current Doctor until after their last episode airs.)