In the "ultimate" version, you purchase the full game, and with each new update, you can download the latest update for free. However, Patreon benefits are exclusive to Patreon. If you choose the Patreon version of the game, you will need to pay for VIP+2 every month to get new updates and VIP access.
You can have both the Ultimate version and VIP access on Patreon, but with each update, the VIP code changes. So if you cancel your subscription, you will lose VIP access, but you will still be able to continue playing the game.