- HPA controller exposes the following metrics from the kube-controller-manager. 
  - `metric_computation_duration_seconds`: The time(seconds) that the HPA controller takes to calculate one metric.

- Registered_metric_total, disabled_metric_total, hidden_metric_total & kubernetes_feature_enabled are promoted to `BETA` stability. ([#119264](https://github.com/kubernetes/kubernetes/pull/119264), [@logicalhan](https://github.com/logicalhan)) [SIG API Machinery, Architecture, Cluster Lifecycle...

* Add apiserver metric for number of requests dropped because of inflight limit. ([#58340](https://github.com/kubernetes/kubernetes/pull/58340), [@gmarek](https://github.com/gmarek))
* Add apiserver metric for current inflight-request usage. ([#58342](https://github.com/kubernetes/kubernetes/pull/58342), [@gmarek](https://github.com/gmarek))

- A new kubelet metric `image_pull_duration_seconds` was added. The metric tracks the duration (in seconds) it takes for an image to be pulled, including the time spent in the waiting queue of image puller. The metric is broken down by bucketed image size. ([#121719](https://github.com/kubernetes/kubernetes/pull/121719), [@ruiwen-zhao](https://github.com/ruiwen-zhao))

- Introduced new apiserver metric `apiserver_flowcontrol_current_inqueue_seats`. This metric is analogous to `apiserver_flowcontrol_current_inqueue_requests`, but tracks the total number of seats, as each request can take more than one seat. ([#119385](https://github.com/kubernetes/kubernetes/pull/119385), [@andrewsykim](https://github.com/andrewsykim))

- Change  `preemption_victims` metric bucket from `LinearBuckets` to `ExponentialBuckets`. ([#112939](https://github.com/kubernetes/kubernetes/pull/112939), [@lengrongfu](https://github.com/lengrongfu)) [SIG Instrumentation and Scheduling]
- Extend the job `job_finished_total metric by new `reason` label and introduce a new job metric to count pod failures