# istio_k8s-auth.yaml
apiVersion: release-notes/v2
kind: feature
area: security
releaseNotes:
- |
  **Added** support for migration and concurrent use of regular K8S tokens as well as new K8S tokens with audience. This feature is enabled by
  default, can be disabled by REQUIRE_3P_TOKEN environment variable in Istiod, which will require new tokens with audience. The
  TOKEN_AUDIENCE environment variable allows customizing the checked audience, default remains istio-ca.