How to test Fedora Flatpaks
There are two remotes to get Flatpaks from in Fedora. The main one is called 'fedora' and includes all stable Flatpaks. The second one is called 'fedora-testing' and includes all Flatpaks submitted in Bodhi for update and pending testing before being included in the stable remote.
Both remotes are pre-installed in all Fedora variants with the Flatpak package installed (Workstation, Silverblue, Kinoite, etc.) but only the main 'fedora' remote is enabled. 'fedora-testing' is disabled by default.
To enable the testing remote, use:
flatpak remote-modify --enable fedora-testing
Then you can look at updates submitted in Bodhi for the testing repo (https://bodhi.fedoraproject.org/releases/F37F), test the Flatpaks and provide karma.
Unfortunately we don't have an equivalent of 'fedora-easy-karma' for Flatpaks right now.