- kube-proxy: a configuration file specified via `--config` is now loaded with strict deserialization, which fails if the config file contains duplicate or unknown fields. This protects against accidentally running with config files that are malformed, mis-indented, or have typos in field names, and getting unexpected behavior....

- `kubeadm`: fixed a bug where the uploaded kubelet configuration in `kube-system/kubelet-config` `ConfigMap` does not respect user patch ([#115575](https://github.com/kubernetes/kubernetes/pull/115575), [@SataQiu](https://github.com/SataQiu))

   ([#123562](https://github.com/kubernetes/kubernetes/pull/123562), [@jpbetz](https://github.com/jpbetz))
- Fixed a `1.27.0+` regression in kubeadm: The kubelet patch configuration will not be uploaded into the `kube-system/kubelet-config` ConfigMap anymore.
   ([#123093](https://github.com/kubernetes/kubernetes/pull/123093), [@SataQiu](https://github.com/SataQiu))

- Applied resources from a directory containing kustomization.yaml ([#74140](https://github.com/kubernetes/kubernetes/pull/74140), [@Liujingfang1](https://github.com/Liujingfang1))

- The CSR signing cert/key pairs will be reloaded from disk like the kube-apiserver cert/key pairs ([#86816](https://github.com/kubernetes/kubernetes/pull/86816), [@deads2k](https://github.com/deads2k)) [SIG API Machinery, Apps and Auth]

- Added the `SizeBasedListCostEstimate` feature gate (enabled by default), which changes how APF seats are assigned to `LIST` requests. With this feature, one seat is assigned per 100KB of data loaded into memory at once during a `LIST` operation. ([#132932](https://github.com/kubernetes/kubernetes/pull/132932), [@serathius](https://github.com/serathius))

* Performance test framework and basic tests for the IPAM controller, to simulate behavior of the four supported modes under lightly loaded and loaded conditions, where load is defined as the number of operations to perform as against the configured kubernetes. ([#61143](https://github.com/kubernetes/kubernetes/pull/61143), [@satyasm](https://github.com/satyasm))

* Container runtime daemon (e.g. dockerd) logs in GCE cluster will be uploaded to stackdriver and elasticsearch with tag `container-runtime`. ([#59103](https://github.com/kubernetes/kubernetes/pull/59103), [@Random-Liu](https://github.com/Random-Liu))

## Changes by Kind

### Feature

- Kubernetes is now built with Go 1.19.8 ([#117133](https://github.com/kubernetes/kubernetes/pull/117133), [@xmudrii](https://github.com/xmudrii)) [SIG Release and Testing]

- DRA: scheduling pods is up to 16x faster, depending on the scenario. Scheduling throughput depends a lot on cluster utilization. It is higher for lightly loaded clusters with free resources and gets lower when the cluster utilization increases. ([#127277](https://github.com/kubernetes/kubernetes/pull/127277), [@pohly](https://github.com/pohly)) [SIG API Machinery, Apps, Architecture, Auth, Etcd, Instrumentation,...