Okay but I paid for this on Itch and it seems a bit unfair that I have to pay again elsewhere for updates.
I just found the page, so I'll have to buy it on steam when it's available. However, anyone that paid money for this on itch is typically eligible for a steam key when the steam version comes out That's just standard practice You'll see all over Itch especially with adult games. Got to Figure something out for those that have already given you money under the promise of one day getting the full game.