SpiceDB v1.39 has been released, introducing native histograms for gRPC server metrics, smarter health checks with user-specified safe migrations, improvements for transaction metadata, and foundational work for two future features: expiring relationships and composable schemas. Native histograms enable efficient monitoring of permissions systems, while smarter health checks allow users to specify safe migration versions to avoid service interruptions. The release also includes a notable change in removing the LookupResources v1 implementation and provides detailed information on these changes and new features in the full release notes.