None yet, Sikorsky is making a final game for this series, but I think it's gonna be SRPG or something.
There is a spin off coming out next with Noelle as the main character. The wizard friend of Iris.
It will be a classic scene collector game with no agency but will have a voice over. The pregnancy aspect that was missing in reminiscence will be found here.
If you played their games before War Demon Kirsten and Reminiscence then you will know what you can expect.
The last game in the series will be "Everlasting Saga" and will be a SRPG made with that one SRPG maker engine. This will be the grand finale with every character present from other games.
Not gonna lie I am not that hyped about it, SRPGs in their nature are pretty linear and are mission based. So you can't explore the world or walk around finding scenes on your own. In that engine you can only navigate through menus.
I can imagine that side content or optional sex scenes will be on the backburner as well.
The core theme of sex scenes will be "lovey dovey" and the more hardcore stuff will be after loosing missions. Loosing a mission or reaching a bad end will be a fail state so after you watched it the game resets you right before that point and won't continue from there.
So a sense of corruption will be pretty bad as well because all canon sex scenes will be pretty tame.
Pregnancy will also only happen during bad ends. I think he is using Noelles game to cram that fetish in so he can find an excuse not to have it as prominent in Everlasting Saga.
(A big complaint by his fans after playing reminiscence was that pregnancy content was not present. He is known for that since every game had that fetish in it).
With his last game he wants to tell a deep coherent storyline again and pregnancy content as a mechanic would work against that.
Before you ask I gathered all that from their Ci-en. I communicate sometimes over there with them.
Bottom line is that War Demon Kirsten was their best game imo and it is a damn shame that we won't get something similar again.