It's a Genesys sourcebook I'd love to see. I know the odds are low after the layoffs but my understanding is books are still being done on a freelance basis. The core book sort of hinted at Tannhauser as it did Android (and Twilight Imperium). I'd love to see its weird war brought to Genesys. The closest I have to it currently is probably Achtung Cthulhu which is, admittedly, pretty awesome in its own right.
I have zero interest in Keyforge though I am sure it's next because it's a big seller for them right now. It makes me wonder if we might get some kind of Arkham files sourcebook for Genesys as well.