It will be, it's just a very big update. It isnt at the moment because there's too much endgame content in the Patreon version and the free one is supposed to be a demo. After it's done it will just be a one time purchase.
Nope a new one will be coming we're hoping before the end of the year. That one will be the final free update and will convert the game into a perfect demo of it. A quarter of the entire experience.
