t(.uk-preserve-color) h2,.uk-tile-primary:not(.uk-preserve-color) h3,.uk-tile-primary:not(.uk-preserve-color) h4,.uk-tile-primary:not(.uk-preserve-color) h5,.uk-tile-primary:not(.uk-preserve-color) h6,.uk-tile-secondary:not(.uk-preserve-color) .uk-h1,.uk-tile-secondary:not(.uk-preserve-color) .uk-h2,.uk-tile-secondary:not(.uk-preserve-color) .uk-h3,.uk-tile-secondary:not(.uk-preserve-color) .uk-h4,.uk-tile-secondary:not(.uk-preserve-color) .uk-h5,.uk-tile-secondary:not(.uk-preserve-color) .uk-h6...

- The time duration of a failed or unschedulable scheduling attempt will be longer, it 
  now includes the time duration of the unreserve operation. ([#113113](https://github.com/kubernetes/kubernetes/pull/113113), [@kerthcet](https://github.com/kerthcet))

    // Parameters for constructing each slice.
    SmallVector<Value, 4> begin_indices, end_indices, strides;
    begin_indices.reserve(value_rank);
    end_indices.reserve(value_rank);
    strides.reserve(value_rank);
    // final output shape
    SmallVector<Value, 4> shape_values;
    shape_values.reserve(value_rank - 1);
    // slice shape before reshape, should be like{?, 1, ?, ?} if axis = 1

											// allowed: unspecified field in ObjectMeta
											"unknown": int64(42),
										},
										// allowed: because x-kubernetes-preserve-unknown-fields: true
										"unknown": int64(42),
									}),
								},
								"x-preserve-unknown-fields-unknown-field-spanning-object-defaults": {
									Type: "object",
									Properties: map[string]apiextensions.JSONSchemaProps{

accessible.\n\nUnknown data preserved in custom resources via x-kubernetes-preserve-unknown-fields is not accessible in CEL expressions. This includes: - Unknown field values that are preserved by object schemas with x-kubernetes-preserve-unknown-fields. - Object properties where the property schema is of an \"unknown type\". An \"unknown type\" is recursively defined as:\n  - A schema with no type and x-kubernetes-preserve-unknown-fields set to true\n  - An array where the items schema is of an \"unknown...

		allErrs = append(allErrs, field.Required(namePath, ""))
	} else {
		allErrs = append(allErrs, ValidateDNS1123Label(ctr.Name, namePath)...)
	}

	// TODO: do not validate leading and trailing whitespace to preserve backward compatibility.
	// for example: https://github.com/openshift/origin/issues/14659 image = " " is special token in pod template
	// others may have done similar
	if len(ctr.Image) == 0 {

- Fixed a regression in 1.23 that incorrectly pruned data from array items of a custom resource that set `x-kubernetes-preserve-unknown-fields: true`. ([#107688](https://github.com/kubernetes/kubernetes/pull/107688), [@liggitt](https://github.com/liggitt))

* Changes secret, configMap, downwardAPI and projected volumes to mount read-only, instead of allowing applications to write data and then reverting it automatically. Until version 1.11, setting the feature gate ReadOnlyAPIDataVolumes=false will preserve the old behavior. ([#58720](https://github.com/kubernetes/kubernetes/pull/58720), [@joelsmith](https://github.com/joelsmith))

- Upgraded `coredns` to `v1.11.1`. ([#120116](https://github.com/kubernetes/kubernetes/pull/120116), [@tukwila](https://github.com/tukwila))
- `EnqueueExtensions` from plugins other than `PreEnqueue`, `PreFilter`, `Filter`, `Reserve` and `Permit` are now ignored.
  It reduces the number of kinds of cluster events the scheduler needs to subscribe/handle. ([#121571](https://github.com/kubernetes/kubernetes/pull/121571), [@sanposhiho](https://github.com/sanposhiho))

## Changes by Kind

### Deprecation