At least not in the next year.
The development of that game is finished so far, David works on the next game, but promised content update after the next game is finished, so maybe end 2020 or 2021.
I still hope for an API for modifications, if he finish that, the community could do the rest and expand the game
I have a lot of ideas for mods, but as long as there is no API and a manual it's not possible...