- `client-go` event library allows customizing spam filtering function. 
  It is now possible to override `SpamKeyFunc`, which is used by event filtering to detect spam in the events. ([#103918](https://github.com/kubernetes/kubernetes/pull/103918), [@olagacek](https://github.com/olagacek))

- Added a new feature gate, `SchedulerQueueingHints` (enabled by default).
  The new feature gate activates a framework for fine-grained filtering of events related to scheduler plugins.

[Sig API Machinery]: https://github.com/kubernetes/community/tree/master/sig-api-machinery

### SIG Apps

- Fixes issue https://github.com/kubernetes-sigs/cloud-provider-azure/issues/4230 and removes the additional filtering on `NotReady` nodes by the azure cloud provider code ([#119128](https://github.com/kubernetes/kubernetes/pull/119128), [@alexanderConstantinescu](https://github.com/alexanderConstantinescu)) [SIG Cloud Provider]

* Attach now supports multiple types ([#40365](https://github.com/kubernetes/kubernetes/pull/40365), [@shiywang](https://github.com/shiywang))
* Create now accepts the label selector flag for filtering objects to create ([#40057](https://github.com/kubernetes/kubernetes/pull/40057), [@MrHohn](https://github.com/MrHohn))

kubectl will use this to retrieve the results of `kubectl get`. ([#40848](https://github.com/kubernetes/kubernetes/pull/40848), [@smarterclayton](https://github.com/smarterclayton))

* The behavior of some watch calls to the server when filtering on fields was incorrect. If watching objects with a filter, when an update was made that no longer matched the filter a DELETE event was correctly sent. However, the object that was returned by that delete was not the (correct) version before the...

- Alpha support for field selectors on custom resources has been added. With the `CustomResourceFieldSelectors` feature gate enabled, the CustomResourceDefinition API now allows specifying `selectableFields`. Listing a field there enables filtering custom resources for that CustomResourceDefinition in list or watch requests. ([#122717](https://github.com/kubernetes/kubernetes/pull/122717), [@jpbetz](https://github.com/jpbetz))

- Fixes issue https://github.com/kubernetes-sigs/cloud-provider-azure/issues/4230 and removes the additional filtering on `NotReady` nodes by the azure cloud provider code ([#119128](https://github.com/kubernetes/kubernetes/pull/119128), [@alexanderConstantinescu](https://github.com/alexanderConstantinescu)) [SIG Cloud Provider]

* Using ipset doing SNAT and packet filtering in IPVS kube-proxy ([#54219](https://github.com/kubernetes/kubernetes/pull/54219), [@m1093782566](https://github.com/m1093782566))

In-tree bug fixes and improvements included:
- Fix load balancer status without VIP.
- Fix filtering of server status.
- Fix resizing PVC of Cinder volume.
- Disable load balancer configuration if it is not defined in cloud config.
- Add support for node shutdown taint.