- The go version defined in `.go-version` is now fetched when invoking test, build, and code generation targets if the current go version does not match it. Set $FORCE_HOST_GO=y while testing or building to skip this behavior, or set $GO_VERSION to override the selected go version. ([#115377](https://github.com/kubernetes/kubernetes/pull/115377),...

* Fixes fake client generation for non-namespaced subresources ([#60445](https://github.com/kubernetes/kubernetes/pull/60445), [@jhorwit2](https://github.com/jhorwit2))
* `kubectl delete` with selection criteria defaults to ignoring not found errors ([#63490](https://github.com/kubernetes/kubernetes/pull/63490), [@deads2k](https://github.com/deads2k))

# Format of generated thumbnail images.
thumbnail.html.image.format=png
# XPath to select images for thumbnails.
thumbnail.html.image.xpath=//IMG
# File extensions to exclude from thumbnail generation.
thumbnail.html.image.exclude.extensions=svg,html,css,js
# Interval for thumbnail generator.
thumbnail.generator.interval=0
# Targets for thumbnail generator (e.g., all).
thumbnail.generator.targets=all

- `kubectl wait` ensures that observedGeneration >= generation to prevent stale state reporting. An example scenario can be found on CRD updates. ([#97408](https://github.com/kubernetes/kubernetes/pull/97408), [@KnicKnic](https://github.com/KnicKnic))

### Documentation

* Remove kubectl namespace command ([#33275](https://github.com/kubernetes/kubernetes/pull/33275), [@maciaszczykm](https://github.com/maciaszczykm))
* Automatic generation of man pages ([#33277](https://github.com/kubernetes/kubernetes/pull/33277), [@mkumatag](https://github.com/mkumatag))

- The `build-tag` flag is reintroduced to conversion-gen and defaulter-gen which allow users to inject custom build tag during code generation process. ([#128259](https://github.com/kubernetes/kubernetes/pull/128259), [@dinhxuanvu](https://github.com/dinhxuanvu))

- Kubebuilder validation tags are set on metav1.Condition for CRD generation ([#92660](https://github.com/kubernetes/kubernetes/pull/92660), [@damemi](https://github.com/damemi)) [SIG API Machinery]

- Fixes conversion error in multi-version custom resources that could cause metadata.generation to increment on no-op patches or updates of a custom resource. ([#88995](https://github.com/kubernetes/kubernetes/pull/88995), [@liggitt](https://github.com/liggitt)) [SIG API Machinery]

    /**
     * Get the value for the key 'thumbnail.html.image.exclude.extensions'. <br>
     * The value is, e.g. svg,html,css,js <br>
     * comment: File extensions to exclude from thumbnail generation.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getThumbnailHtmlImageExcludeExtensions();

    /**

- Fixes conversion error in multi-version custom resources that could cause metadata.generation to increment on no-op patches or updates of a custom resource. ([#88995](https://github.com/kubernetes/kubernetes/pull/88995), [@liggitt](https://github.com/liggitt)) [SIG API Machinery]