- Fixed a data race that could occur when a single Go type was serialized to CBOR concurrently for the first time within a program. ([#129170](https://github.com/kubernetes/kubernetes/pull/129170), [@benluddy](https://github.com/benluddy)) [SIG API Machinery]

- The e2e suite can be instructed not to wait for pods in kube-system to be ready or for all nodes to be ready by passing `--allowed-not-ready-nodes=-1` when invoking the e2e.test program. This allows callers to run subsets of the e2e suite in scenarios other than perfectly healthy clusters. ([#98781](https://github.com/kubernetes/kubernetes/pull/98781), [@smarterclayton](https://github.com/smarterclayton)) [SIG Testing]

* Resolves regression generating informers for packages whose names contain `.` characters ([#82410](https://github.com/kuberne...

- Added the feature gate CBORServingAndStorage to allow CBOR as the encoding for API request and response bodies, and as the storage encoding for custom resources. Clients must opt in; programs built with client-go can do this using the client-go feature gates ClientsAllowCBOR and ClientsPreferCBOR. ([#128539](https://github.com/kubernetes/kubernetes/pull/128539), [@benluddy](https://github.com/benluddy)) [SIG API Machinery, Etcd and Testing]...