I noticed the images.json URL was changed to https://uk.lxd.images.canonical.com/streams/v1/images.json and there is some difference to the structure, for example, some images dont have combined_squashfs_sha256 key which I think they all did before.
Also some images have disappeared e.g. Hirsute Hippo, is there a resource pointing to changes made here or how it is suppose to work. etc?