@nprofile1q... Sorry for any confusion! We're adding the monthly release as an available channel on Flatpak, which means we needed to update the name of the current flatpak to ESR (the yearly release). So you're still on the same release as you were before! There should have been an in-app announcement about this, and we're sorry if it didn't alert you about what was happening: https://support.mozilla.org/en-US/kb/channel-choices-thunderbird-snap-and-flatpak