There is message on his Patreon:
Dear All members,
I know I've been very quiet recently but I hope you're all well, though.
I originally wanted to finish the last battle at the tournament and bring out a new version of The Prison before bringing out the finale.
I changed my mind and decided that if I wanted to get on with other projects (like Town of Femdom, for example), I'd have to finish it first.
That's why I kept making renders to continue the story. I don't think I'll be able to bring a new update at the moment, and I don't know when it will be released. I'm still working on it but I wanted to offer you the renders if you'd like to see what's in what I've already done. There are no adjustments (photoshop yet..), it's not denoised but you can see there is already a lot of work and this part 1 contain already 926 renders.
He is working on his other game. After this he will come back to this one.