- The ability to monitor any system daemon logs. Previously only kernel
    logs were supported.
  - The ability to be deployed and run as a native daemon.
* **[alpha]** Critical Pods: When feature gate "ExperimentalCriticalPodAnnotation" is
  set to true, the system will guarantee scheduling and admission of pods with
  the following annotation - `scheduler.alpha.kubernetes.io/critical-pod`
  - This feature should be used in conjunction with the

* Prep node_e2e for GCI to COS name change ([#41088](https://github.com/kubernetes/kubernetes/pull/41088), [@jessfraz](https://github.com/jessfraz))

* Added configurable etcd initial-cluster-state to kube-up script ([#41320](https://github.com/kubernetes/kubernetes/pull/41320), [@jszczepkowski](https://github.com/jszczepkowski))