Please refer to the CHANGELOG.md for a full list of changes (commits, issues, PRs) made. For developer-friendly instructions on how to upgrade, please go to UPGRADE.md.
We release new versions for each service, when one of the services (ORY Keto, ORY Hydra, ORY Oathkeeper) requires a release. This way, it is obvious that ORY Keto v1.0.0 is compatible with ORY Hydra v1.0.0 and ORY Oathkeeper v1.0.0. This implies that this particular release for this particular service might not include any substantial changes.