The release remains a public beta. GSPro’s installation guide says an active subscription is required, including for users whose old lifetime license has expired. The beta installs through the game; after selecting it, users exit GSPro and restart the launcher to download it. The version number on the startup screen and main menu identifies the installed beta.
Online groups need to coordinate versions. The official guide says beta users cannot play online with people on the current release; players must return to that release or have their partners install the beta. That compatibility restriction matters before changing a simulator used for shared rounds.
The October build also adds user-defined course lists and fixes course-filter resets, shot transitions and incorrect surface reporting. GSPro’s change log and beta guide provide the release details alongside the demonstrations.