Overview page: https://www.gog.com/en/anniversary
Direct sign up for Galaxy Linux beta: https://www.smartsurvey.co.uk/t/YEF5EV/
No one here cares. My buddies who only started using it via SteamOS I've turned to lutris and heroic but the moment this is available for them I know they'll abandon them for not recognizing them as much as GOG. I hope more will care but those companies unfortunately have that brand recognition people overly suck in