It was put "on hold" by the dev, so that his Patreons wouldnt be forced to pay until he could get out an update so right now hes doing things at his own cost, yes its taking longer than we would all like but when it gets an update atleast people wont have been paying him all this time for what he termed no reason, as from the looks he preferred being paid for doing stuff, not just thinking about it.
I have to give him

for that, yes there were 2-3 months when he and team were working slowly on it, mainly due to medical reasons etc and at the time still charging but
mrZZ had stopped that when he realised the update would take longer, Real life affects Devs too, If/When we get to see an update we can all decide if we still like the game, some people have made that choice already one way or the other, fine for them/us, their/our choice.