According to the nextcloud /settings/admin/overview view I’m currently running 23.0.4. It also says “Your version is up to date” yet v24 has been released?
The remote https://scan.nextcloud.com tool thinks I’m running 22.2.3.0 which I’m less worried about.
I prefer to be a few installations behind anyway and I haven’t checked all my app compatibilities either. But why isn’t the new version showing as available?