It's coming at 2.0 on Patreon. It's said it should arrive before the end of the month. So you can likely expect you can get to play the 1.9 on Itch when 2.0 is released.
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Ive noticed that when they do a big update, its likely based around something new they going to add to gameplay and takes longer to make. So it depends if its gonna be a 2-3 weeks long wait for a update, or a months wait.
Cause the longer the wait, the likely it could be a big update for new stuff.
They usualy do weekly updates, but sometimes its months.