- Fix an issue with container restarts using a modified configmap or secret subpath volume mount. ([#89629](https://github.com/kubernetes/kubernetes/pull/89629), [@fatedier](https://github.com/fatedier)) [SIG Architecture, Storage and Testing]

* The protobuf serialization of API objects has been updated to store maps in a predictable order to ensure that the representation of that object does not change when saved into etcd. This prevents the same object from being seen as being modified, even when no values have changed. ([#47701](https://github.com/kubernetes/kubernetes/pull/47701), [@smarterclayton](https://github.com/smarterclayton))

- The list-type of the alpha `resourceClaims` field introduced to `Pods` in `1.26.0` was modified from `set` to `map`, resolving an incompatibility with use of this schema in `CustomResourceDefinitions` and with server-side apply. ([#114585](https://github.com/kubernetes/kubernetes/pull/114585), [@JoelSpeed](https://github.com/JoelSpeed))

- Kube-proxy no longer modifies shared EndpointSlices and will not break with EndpointSlice feature gate enabled on Windows. ([#89117](https://github.com/kubernetes/kubernetes/pull/89117), [@robscott](https://github.com/robscott)) [SIG Network]

- Fix handling of aws-load-balancer-security-groups annotation. Security-Groups assigned with this annotation are no longer modified by kubernetes which is the expected behaviour of most users. Also no unnecessary Security-Groups are created anymore if this annotation is used. ([#88691](https://github.com/kubernetes/kubernetes/pull/88691), [@Elias481](https://github.com/Elias481))...

- Fixes an issue in winkernel proxier that causes proxy rules to leak anytime service backends are modified. ([#112840](https://github.com/kubernetes/kubernetes/pull/112840), [@daschott](https://github.com/daschott)) [SIG Network and Windows]

## Changelog since v1.26.0

## Changes by Kind

### API Change

### Other notable changes

* Bump GLBC version to 0.9.5 - fixes [loss of manually modified GCLB health check settings](https://github.com/kubernetes/kubernetes/issues/47559) upon upgrade from pre-1.6.4 to either 1.6.4 or 1.6.5. ([#47567](https://github.com/kubernetes/kubernetes/pull/47567), [@nicksardo](https://github.com/nicksardo))

  - A server-side apply request that changes an object which has duplicate items in a keyed list, and modifies the duplicated item removes the duplicates and replaces them with the single item contained in the server-side apply request. ([#121575](https://github.com/kubernetes/kubernetes/pull/121575), [@apelisse](https://github.com/apelisse))

* [stable] The PV spec for Azure File, CephFS, iSCSI, and Glusterfs is modified to reference namespaced resources.

* [stable] You can now customize the iSCSI initiator name per volume in the iSCSI volume plugin.