- Kubeadm: Some text in the `kubeadm upgrade plan` output has changed. If you have scripts or other automation that parses this output, please review these changes and update your scripts to account for the new output. ([#98728](https://github.com/kubernetes/kubernetes/pull/98728), [@stmcginnis](https://github.com/stmcginnis)) [SIG Cluster Lifecycle]

- The `generate_groups.sh` and `generate_internal_groups.sh` scripts from the `k8s.io/code-generator` repo are deprecated (but still work) in favor of `kube_codegen.sh` in that same repo.  Projects which use the old scripts are encouraged to look at adopting the new one. ([#117897](https://github.com/kubernetes/kubernetes/pull/117897), [@thockin](https://github.com/thockin)) [SIG API Machinery]...

* Fixes issue where subpath readOnly mounts failed ([#63045](https://github.com/kubernetes/kubernetes/pull/63045), [@msau42](https://github.com/msau42))
* Bugfix allowing use of IP-aliases with custom-mode network in GCE setup scripts. ([#62172](https://github.com/kubernetes/kubernetes/pull/62172), [@shyamjvs](https://github.com/shyamjvs))

### Other (Cleanup or Flake)

- Bump distroless-iptables to 0.2.8 based on Go 1.20.11 ([#121975](https://github.com/kubernetes/kubernetes/pull/121975), [@cpanato](https://github.com/cpanato)) [SIG Testing]
- Makefile and scripts now respect GOTOOLCHAIN and otherwise ensure ./.go-version is used ([#122076](https://github.com/kubernetes/kubernetes/pull/122076), [@BenTheElder](https://github.com/BenTheElder)) [SIG Release and Testing]

## Dependencies

- Remove the deprecated flag `--experimental-check-node-capabilities-before-mount`. With CSI now GA, there is a better alternative. Remove any use of  `--experimental-check-node-capabilities-before-mount` from your kubelet scripts or manifests. ([#104732](https://github.com/kubernetes/kubernetes/pull/104732), [@mengjiao-liu](https://github.com/mengjiao-liu))

- Integration testing now takes periodic Prometheus scrapes from the etcd server.
  There is a new script ,`hack/run-prometheus-on-etcd-scrapes.sh`, that runs a containerized Prometheus server against an archive of such scrapes. ([#106190](https://github.com/kubernetes/kubernetes/pull/106190), [@MikeSpreitzer](https://github.com/MikeSpreitzer)) [SIG API Machinery and Testing]

- Lower and upper case feature flag values are now allowed, but the name still has to match. ([#121441](https://github.com/kubernetes/kubernetes/pull/121441), [@soltysh](https://github.com/soltysh))
- Makefile and scripts now respect `GOTOOLCHAIN` and otherwise ensure `./.go-version` is used. ([#120279](https://github.com/kubernetes/kubernetes/pull/120279), [@BenTheElder](https://github.com/BenTheElder))

### Other (Cleanup or Flake)

- Bump distroless-iptables to 0.2.8 based on Go 1.20.11 ([#121962](https://github.com/kubernetes/kubernetes/pull/121962), [@cpanato](https://github.com/cpanato)) [SIG Testing]
- Makefile and scripts now respect GOTOOLCHAIN and otherwise ensure ./.go-version is used ([#122077](https://github.com/kubernetes/kubernetes/pull/122077), [@BenTheElder](https://github.com/BenTheElder)) [SIG Release and Testing]

## Dependencies