If you've already paid for the original deluxe version, shoot us an email (outismof@gmail.com) with a screenshot of the item in your library and we'll reply with an Itch key when it's available. The Itch version comes *with* a Steam key, but if you don't want to purchase the game on Steam, you can just ignore it or give it away.
The game will be sold on here normally, but is available sooner for paid subscribers. One of the benefits our paid subscribers get is earlier access to new content than the casual follower would get.
Itch and Patreon have very clunky systems in place, and there's no real elegant way to go about doing this. If a smoother alternative appears, I'm happy to take it.