- `kubeadm`: improved the logic that checks whether a `systemd` service exists. ([#120514](https://github.com/kubernetes/kubernetes/pull/120514), [@fengxsong](https://github.com/fengxsong))
- `kubeadm`: will now use universal deserializer to decode static pod. ([#120549](https://github.com/kubernetes/kubernetes/pull/120549), [@pacoxu](https://github.com/pacoxu))
- `kubectl prune v2`: Switched annotation from `contains-group-resources` to `contains-group-kinds`,

* etcd3: pass SelectionPredicate instead of Filter to storage layer ([#31190](https://github.com/kubernetes/kubernetes/pull/31190), [@hongchaodeng](https://github.com/hongchaodeng))
* etcd3: make gets for previous value in watch serialize-able ([#34089](https://github.com/kubernetes/kubernetes/pull/34089), [@wojtek-t](https://github.com/wojtek-t))

- Zero-value `metadata.creationTimestamp` values are now omitted and no longer serialize an explicit `null` in JSON, YAML, and CBOR output ([#130989](https://github.com/kubernetes/kubernetes/pull/130989), [@liggitt](https://github.com/liggitt)) [SIG API Machinery, Apps, Architecture, Auth, CLI, Cloud Provider, Cluster Lifecycle, Etcd,...

				}
			}

			info.Buckets[bucket] = bms
		}
	}

	if opts.Users && opts.Groups && opts.Policies && !opts.Buckets {
		// serialize SiteReplicationMetaInfo calls - if data in cache is within
		// healing interval, avoid fetching IAM data again from disk.
		if metaInfo, ok := c.getSRCachedIAMInfo(); ok {
			return metaInfo, nil
		}
	}

    * action required: Cloud providers other than GCE might want to update their deployments or sample yaml files to reuse the role created via add-on.

### Other notable changes

* Kubernetes json deserializer is now case-sensitive to restore compatibility with pre-1.8 servers. ([#65157](https://github.com/kubernetes/kubernetes/pull/65157), [@caesarxuchao](https://github.com/caesarxuchao))

* Fixed API server panic during concurrent GET or LIST requests with non-empty `resourceVersion`. ([#65092](https://github.com/kubernetes/kubernetes/pull/65092), [@sttts](https://github.com/sttts))
* Kubernetes json deserializer is now case-sensitive to restore compatibility with pre-1.8 servers. ([#65034](https://github.com/kubernetes/kubernetes/pull/65034), [@caesarxuchao](https://github.com/caesarxuchao))

## Changelog since v1.8.14

### Action Required

## Changelog since v1.9.8

### Action Required

* Update gogo/protobuf to serialize backward, as to get better performance on deep objects. ([#77355](https://github.com/kubernetes/kubernetes/pull/77355), [@apelisse](https://github.com/apelisse))

out1[17] = x35 out1[18] = x37 out1[19] = x39 out1[20] = x41 out1[21] = x43 out1[22] = x45 out1[23] = x46 out1[24] = x47 out1[25] = x49 out1[26] = x51 out1[27] = x53 out1[28] = x55 out1[29] = x57 out1[30] = x59 out1[31] = x60 } // fiatScalarFromBytes deserializes a field element NOT in the Montgomery domain from bytes in little-endian order. // // Preconditions: // // 0 ≤ bytes_eval arg1 < m // // Postconditions: // // eval out1 mod m = bytes_eval arg1 mod m // 0 ≤ eval out1 < m // // Input Bounds: // //...