- Removed the following deprecated metrics:
  - node_collector_evictions_number replaced by node_collector_evictions_total
  - scheduler_e2e_scheduling_duration_seconds replaced by scheduler_scheduling_attempt_duration_seconds ([#115209](https://github.com/kubernetes/kubernetes/pull/115209), [@dgrisonnet](https://github.com/dgrisonnet))

### API Change

* Make all e2e tests lookup image to use from a centralized place. In that centralized place, add support for multiple platforms. ([#49457](https://github.com/kubernetes/kubernetes/pull/49457), [@mkumatag](https://github.com/mkumatag))

   APPENDIX: How to apply the Apache License to your work.

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   APPENDIX: How to apply the Apache License to your work.

      To apply the Apache License to your work, attach the following
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  apiserver_flowcontrol_current_executing_requests ([#119110](https://github.com/kubernetes/kubernetes/pull/119110), [@andrewsykim](https://github.com/andrewsykim)) [SIG API Machinery and Instrumentation]
- Replace `apiserver_storage_db_total_size_in_bytes` with `apiserver_storage_size_bytes` metric ([#118812](https://github.com/kubernetes/kubernetes/pull/118812), [@serathius](https://github.com/serathius)) [SIG API Machinery, Instrumentation and Testing]

### API Change

- Fixes a regression in v1beta1 PodDisruptionBudget handling of `strategic merge patch`-type API requests for the `selector` field. Prior to 1.21, these requests would merge `matchLabels` content and replace `matchExpressions` content. In 1.21, patch requests touching the `selector` field started replacing the entire selector. This is consistent with server-side apply and the v1 PodDisruptionBudget behavior, but should not have been changed for v1beta1....

### API Change

- Some apiserver metrics were changed, as follows.
  - `priority_level_seat_count_samples` is replaced with `priority_level_seat_utilization`, which samples every nanosecond rather than every millisecond; the old metric conveyed utilization despite its name.
  - `priority_level_seat_count_watermarks` is removed.