Been fighting sunshine to make either the rpm, flatpak or appimage work in gamemode. Kind of given up after a day of reading github issues and discord help posts to try and get them working. But I'm glad to see it's a bazzite feature that looks like it's being worked on for the future
atm both :39 and :latest are the same, but that changes on new fedora releases :39 will forever be based on fedora 39, while :latest will be based on whatever the latest stable fedora is