- `kubeproxy_conntrack_reconciler_deleted_entries_total` metric can be used to track cumulative sum of conntrack flows cleared by reconciler. ([#130204](https://github.com/kubernetes/kubernetes/pull/130204), [@aroradaman](https://github.com/aroradaman))

  - `resourceclaim_controller_creates_total` count metric with labels `admin_access` (true or false), `status` (failure or success) to track the total number of `ResourceClaims` creation requests

- Track Job completion through status and Pod finalizers, removing dependency on Pod tombstones. ([#98238](https://github.com/kubernetes/kubernetes/pull/98238), [@alculquicondor](https://github.com/alculquicondor)) [SIG API Machinery, Apps, Auth and Testing]

- kubeadm deprecates the use of the hyperkube image ([#85094](https://github.com/kubernetes/kubernetes/pull/85094), [@rosti](https://github.com/rosti))
## Metrics Changes
### Added metrics
- Add `scheduler_goroutines` metric to track number of kube-scheduler binding and prioritizing goroutines ([#83535](https://github.com/kubernetes/kubernetes/pull/83535), [@wgliang](https://github.com/wgliang))

### Serverside Apply - Beta 2

Server-side Apply was promoted to Beta in 1.16, but is now introducing a second Beta in 1.18. This new version will track and manage changes to fields of all new Kubernetes objects, allowing you to know what changed your resources and when.

### Extending Ingress with and replacing a deprecated annotation with IngressClass

- Added `kubelet` Topology Manager metrics to track admission requests processed and occured admission errors. ([#115137](https://github.com/kubernetes/kubernetes/pull/115137), [@swatisehgal](https://github.com/swatisehgal))

### Feature

- A client-go metric, rest_client_exec_plugin_call_total, has been added to track total calls to client-go credential plugins. ([#98892](https://github.com/kubernetes/kubernetes/pull/98892), [@ankeesler](https://github.com/ankeesler)) [SIG API Machinery, Auth, Cluster Lifecycle and Instrumentation]

- Kubeadm: modified the etcd static Pod `liveness` and `readiness` probes to use a new etcd `v3.5.3+` HTTP(s) health check endpoint `/health?serializable=true` that allows to track the health of individual etcd members and not fail all members if a single member is not healthy in the etcd cluster. ([#110072](https://github.com/kubernetes/kubernetes/pull/110072), [@neolit123](https://github.com/neolit123))

- Added a new Priority and Fairness metric `apiserver_flowcontrol_request_dispatch_no_accommodation_total` to track the number of times a request dispatch attempt results in a no-accommodation status due to lack of available seats. ([#106629](https://github.com/kubernetes/kubernetes/pull/106629), [@tkashem](https://github.com/tkashem))

- Registered metric `apiserver_request_body_size_bytes` to track the size distribution of requests by `resource` and `verb`. ([#120474](https://github.com/kubernetes/kubernetes/pull/120474),...