k8s: Gateway API 1.4: New Features

Gateway API v1.4.0 (released Oct 6, 2025) advances Kubernetes service networking with three features promoted to Standard (BackendTLSPolicy, supportedFeatures in GatewayClass status, and named rule fields for Routes) and several experimental additions (Mesh/XMesh, default Gateways, and an ExternalAuth filter for HTTPRoute). The release also adds per-port TLS/client-certificate configuration to address connection coalescing security, introduces a couple of breaking validation changes, improves CI/docs, and is usable on Kubernetes >=1.26.

• Source: Kubernetes Official Blog