I recently dug through some old videos and early development infos from the devs and found an interesting comment from u/Robert_GSG (one of the founders of GSG and lead devs of the game) from an AMA they did when they left early access.
Afaik they hinted already recently that there would be some kind of new (/old?) machinery involved so that kind fits that topic...
This is the comment i found pretty interesting!
Bonus: Here is a interesting YouTube playlist of old Vlogs they did in 2017. Pretty cool to do a little dive in the past and hear them talking about their thought processes and inspiration for the game.
Rock and Stone!
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