- Helm 2.4.0 adds native support for Kubernetes 1.6, including RBAC configuration for Tiller and compiled against k8s 1.6 APIs.
- Introduces plugin protocol hooks for client‑side plugins, new Helm template function (merge), zsh completion, release locking, net‑host flag for helm init, and Prometheus monitoring hooks.
- Breaking usage changes: template includes now fail on missing files, and missing chart dependencies cause install/update to error; gRPC upgraded for security.