This might be a stupid question but if I buy the current one will i get access to the future updates or do i need to buy again?
Viewing post in (WIP) Hailey's Treasure Adventure comments
Yes, you buy once, you get the rest of the updates.
Use Itch app for automatic updates, it works like Steam. Here's the link: https://itch.io/app
If you don't plan to use Itchio, you may update the game manually by reinstalling the game.