Sadly 1.26.0 was not without bugs, so this is mostly just a bugfix update.
It fixes problems with image sequences, looping, the batch queue, and video encoding.
Full changelog on Discord and in Flowframes.
Note: I am looking into a way to update Flowframes without having to re-download all components. Until then, if you don't want to redownload the Pytorch files, you could install the new version to a different location, don't enable Pytorch in the installer, then copy your "py-tu" or "py-amp" folder from your old installation (FlowframesData/pkgs/). Do this on your own risk though - It won't be required in the future once the Installer can handle updates better.