- A `create` or `update` API request with duplicate items in a keyed list no longer wipes out managedFields. Examples include env var entries with the same name, or port entries with the same containerPort in a pod spec.
  - A server-side apply request that makes unrelated changes to an object which has duplicate items in a keyed list no longer fails, and leaves the existing duplicate items as-is.

## Changelog since v1.10.5

### Action Required

- 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))

- Missing directories listed in a user's PATH are no longer considered errors and are instead logged by the `kubectl plugin list` command when listing available plugins. ([#73542](https://github.com/kubernetes/kubernetes/pull/73542), [@juanvallejo](https://github.com/juanvallejo))

* Allow kube- and cloud-controller-manager to listen on ports up to 65535. ([#65860](https://github.com/kubernetes/kubernetes/pull/65860), [@sttts](https://github.com/sttts))
* Allow kube-scheduler to listen on ports up to 65535. ([#65833](https://github.com/kubernetes/kubernetes/pull/65833), [@sttts](https://github.com/sttts))

- Add --permit-address-sharing flag to `kube-apiserver` to listen with `SO_REUSEADDR`. While allowing to listen on wildcard IPs like 0.0.0.0 and specific IPs in parallel, it avoids waiting for the kernel to release socket in `TIME_WAIT` state, and hence, considerably reducing `kube-apiserver` restart times under certain conditions. ([#93861](https://github.com/kubernetes/kubernetes/pull/93861), [@sttts](https://github.com/sttts))...

- The synthetic "Bookmark" event for the watch stream requests will now include a new annotation: `kubernetes.io/initial-events-list-blueprint`. THe annotation contains an empty, versioned list that is encoded in the requested format (such as protobuf, JSON, or CBOR), then base64-encoded and stored as a string. ([#127587](https://github.com/kubernetes/kubernetes/pull/127587), [@p0lyn0mial](https://github.com/p0lyn0mial))...

- QueueingHint implementation for NodeUnschedulable is reverted because we found potential scenarios where events that make Pods schedulable could be missed. ([#122288](https://github.com/kubernetes/kubernetes/pull/122288), [@sanposhiho](https://github.com/sanposhiho))...

## Changelog since v1.11.0

### Action Required

  - *apiserver_storage_list_evaluated_objects_total*: Counter of objects tested in the course of serving a LIST request from etcd, broken down by resource
  - *apiserver_storage_list_returned_objects_total*: Counter of objects returned for a LIST request from etcd, broken down by resource ([#104983](https://github.com/kubernetes/kubernetes/pull/104983), [@MikeSpreitzer](https://github.com/MikeSpreitzer))