No, Incest will never be in this game unless you use the patch. No matter what time of the release, as long as the dev needs support from Patreon it will never feature incest. That's why you have to get the mod, it's unofficial.
Hey, thanks so much for that link though. Just started the game and really couldn't get into the game because of the weird terminology that made it sound like a non native English speaker translated only those 3 words. The changes are awesome and made all the difference, so much thanks friend. Cheers.