- Fixed an error processing watch events when running skewed apiservers ([#73482](https://github.com/kubernetes/kubernetes/pull/73482), [@liggitt](https://github.com/liggitt))
- jsonpath expressions containing `[start:end:step]` slice are now evaluated correctly ([#73149](https://github.com/kubernetes/kubernetes/pull/73149), [@liggitt](https://github.com/liggitt))

translate($x, $y);\n}\n\n// Different radius each side\n@mixin border-radius-sides($top-left, $top-right, $bottom-left, $bottom-right) {\n  border-radius: $top-left $top-right $bottom-left $bottom-right;\n}\n\n@mixin calc($property, $expression) {\n  #{$property}: calc(#{$expression});\n}\n\n@mixin rotate($value) {\n  transform: rotate($value);\n}\n\n@mixin animation($animation) {\n  animation: $animation;\n}\n\n// Gradient background\n@mixin gradient($color: #f5f5f5, $start: #eee, $stop: $white) {\n  background-color:...

- Added support for CEL expressions with escaped names in the structured authentication config. Using `[...]` to access claims or user data was recommended when names contained characters that would otherwise need escaping. CEL optionals with `?` could be used where has was not applicable...

- Introduce scheduling.k8s.io/v1alpha1 Workload API to allow for expressing workload-level scheduling requirements and let kube-scheduler act on those. ([#134564](https://github.com/kubernetes/kubernetes/pull/134564), [@macsko](https://github.com/macsko)) [SIG API Machinery, Apps, CLI, Etcd, Scheduling and Testing]

pkg regexp/syntax, const ErrMissingParen = "missing closing )"
pkg regexp/syntax, const ErrMissingRepeatArgument = "missing argument to repetition operator"
pkg regexp/syntax, const ErrTrailingBackslash = "trailing backslash at end of expression"
pkg regexp/syntax, const ErrUnexpectedParen = "unexpected )"
pkg regexp/syntax, const ErrUnexpectedParen ErrorCode
pkg regexp/syntax, const FoldCase = 1
pkg regexp/syntax, const InstAlt = 0

* The parameter `regex` has been deprecated and replaced by `pattern`.
    * You can read more about it in the docs for [Query Parameters and String Validations: Add regular expressions](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#add-regular-expressions).
* New Pydantic models use an improved and simplified attribute `model_config` that takes a simple dict instead of an internal class `Config` for their configuration.

- Kube-apiserver: jsonpath expressions with consecutive recursive descent operators are no longer evaluated for custom resource printer columns ([#93408](https://github.com/kubernetes/kubernetes/pull/93408), [@joelsmith](https://github.com/joelsmith)) [SIG API Machinery]