Kubernetes v1.36 "Haru" Released
By BIOS Founding Team
The Kubernetes v1.36 release, codenamed "Haru," shipped on April 22, 2026, with 70 total enhancements: 18 graduating to Stable, 25 entering Beta, and 25 landing in Alpha.
The headline feature is User Namespaces reaching general availability, giving pods stronger, production-ready isolation by mapping container users to unprivileged users on the host, a meaningful security improvement for any cluster running untrusted or multi-tenant workloads.
Fine-grained kubelet API authorization also graduated to GA, giving cluster operators more granular control over exactly which actions are permitted against the kubelet API, alongside server-side sharded list and watch for better API server scalability on large clusters.
Declarative validation (CEL-based validation rules for CRDs) and Volume Group Snapshots both reached GA too, reducing how often teams need custom webhooks just to validate their own APIs.
For BIOS members working in cloud or platform engineering, release notes like these are a genuinely good habit, and SIG-level contribution (docs, testing, small enhancements) remains one of the most approachable ways into the project.
Full release notes: https://kubernetes.io/blog/2026/04/22/kubernetes-v1-36-release/
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