Difference of image version between ostree and ghcr

My system assesses that 40.20240826.0 is the lastest “stable” image:

malix@malix-pc ~> rpm-ostree upgrade
note: automatic updates (stage) are enabled
Pulling manifest: ostree-image-signed:docker://ghcr.io/ublue-os/bluefin-dx-nvidia:stable
Checking out tree fc74ee4... done
Enabled rpm-md repositories: updates fedora copr:copr.fedorainfracloud.org:hikariknight:looking-glass-kvmfr google-chrome rpmfusion-nonfree-nvidia-driver rpmfusion-nonfree-steam copr:copr.fedorainfracloud.org:phracek:PyCharm google-chrome-beta copr:copr.fedorainfracloud.org:mrduarte:LenovoLegionLinux updates-archive
Importing rpm-md... done
rpm-md repo 'updates' (cached); generated: 2024-08-26T01:59:52Z solvables: 25367
rpm-md repo 'fedora' (cached); generated: 2024-04-14T18:51:11Z solvables: 74881
rpm-md repo 'copr:copr.fedorainfracloud.org:hikariknight:looking-glass-kvmfr' (cached); generated: 2024-08-21T09:46:29Z solvables: 5
rpm-md repo 'google-chrome' (cached); generated: 2024-08-23T16:54:25Z solvables: 3
rpm-md repo 'rpmfusion-nonfree-nvidia-driver' (cached); generated: 2024-08-22T08:39:27Z solvables: 29
rpm-md repo 'rpmfusion-nonfree-steam' (cached); generated: 2024-08-15T19:28:49Z solvables: 2
rpm-md repo 'copr:copr.fedorainfracloud.org:phracek:PyCharm' (cached); generated: 2024-03-18T11:54:41Z solvables: 14
rpm-md repo 'google-chrome-beta' (cached); generated: 2024-08-23T16:54:25Z solvables: 3
rpm-md repo 'copr:copr.fedorainfracloud.org:mrduarte:LenovoLegionLinux' (cached); generated: 2024-08-23T09:44:01Z solvables: 12
rpm-md repo 'updates-archive' (cached); generated: 2024-08-21T03:52:59Z solvables: 36142
Resolving dependencies... done
No upgrade available.

malix@malix-pc ~> rpm-ostree status
State: idle
AutomaticUpdates: stage; rpm-ostreed-automatic.timer: no runs since boot
Deployments:
● ostree-image-signed:docker://ghcr.io/ublue-os/bluefin-dx-nvidia:stable
                   Digest: sha256:d09d234d762b446d57b93b0ad0d6ae82afdf67c4c9d3cacc687950c1fc0fb00f
                  Version: 40.20240826.0 (2024-08-27T05:53:49Z)

However, searching bluefin-dx-nvidia versions · ublue-os · GitHub reveal that 20240827 is the latest tagged stable version on ghcr, while 20240826 is not tagged

Is that normal ?
Tested with another computer