message: docs: updating the envoy-announce deprecation policy
diff: @@ -52,8 +52,10 @@ maximize the chances of your PR being merged.
  features might need rate limiting for logging this). We make no guarantees about code or deployments
  that rely on undocumented behavior.
  * All deprecations/breaking changes will be clearly listed in [DEPRECATED.md](DEPRECATED.md).
  -* All deprecations/breaking changes will be announced to the
  - [envoy-announce](https://groups.google.com/forum/#!forum/envoy-announce) email list.
  +* High risk deprecations//breaking changes may be announced to the
  + [envoy-announce](https://groups.google.com/forum/#!forum/envoy-announce) email list but by default
  + it is expected the multi-phase warn-by-default/fail-by-default is sufficient to warn users to move
  + away from deprecated features.
  * Protobuf configuration in an alpha namespace, e.g. `v2alpha`, do not have any
  restrictions on breaking changes. They may be freely modified, together with
  their respective features.
  