- 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....

   ([#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))

- `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))

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

- 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))

- 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]

## 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]

* 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))

- Kubeadm now prints warnings instead of throwing errors if the current system time is outside of the NotBefore and NotAfter bounds of a loaded certificate.  ([#94504](https://github.com/kubernetes/kubernetes/pull/94504), [@neolit123](https://github.com/neolit123))