Slay the Spire 2: How do I get the beta version?

The problem

Maybe this is a stupid question but I have the Early Access version and I hear there's a beta version but I don't get how to access it. Is there a link somewhere?

What players suggest

Right click on game in library -> properties -> game versions & beta. Select the Beta branch from there and you should have to "update" your game and then you are on Beta branch.

In case it is unclear with the previous responses, the beta branch is part of the early access game. You just need to opt into it and once you do it should update the game and your steam launcher should show "Slay the Spire 2[public-beta]" The previous comments should be enough to get you there, but if you still need some assistance post again and I'll do a detailed breakdown of the steps.