### Apps

- The `.spec.rollbackTo` field of the Deployment kind is deprecated in `extensions/v1beta1`.

- The `kubernetes.io/created-by` annotation is deprecated and will be removed in version 1.9.
  Use [ControllerRef](https://github.com/kubernetes/community/blob/master/contributors/design-proposals/api-machinery/controller-ref.md) instead to determine which controller, if any, owns an object.