* Adds a metric apiserver_request_error_total to kube-apiserver. This metric tallies the number of request_errors encountered by verb, group, version, resource, subresource, scope, component, and code.  ([#83427](https://github.com/kubernetes/kubernetes/pull/83427), [@logicalhan](https://github.com/logicalhan))

        final String sessionId = "session123";
        indexUpdater.addFinishedSessionId(sessionId);
        assertTrue(indexUpdater.finishedSessionIdList.contains(sessionId));
    }

    // Test addFinishedSessionId with multiple sessions
    @Test
    public void test_addFinishedSessionId_multiple() {
        indexUpdater.addFinishedSessionId("session1");

- The go version defined in `.go-version` is now fetched when invoking test, build, and code generation targets if the current go version does not match it. Set $FORCE_HOST_GO=y while testing or building to skip this behavior, or set $GO_VERSION to override the selected go version. ([#115496](https://github.com/kubernetes/kubernetes/pull/115496), [@liggitt](https://github.com/liggitt)) [SIG Release...

Jonathan Ehwald <******@****.***> 1768082577 +0100

- The resource version option, when passed to a list call, is now consistently interpreted as the minimum allowed resource version.  Previously when listing resources that had the watch cache disabled clients could retrieve a snapshot at that exact resource version.  If the client requests a resource version newer than the current state, a TimeoutError is returned suggesting the client retry in a few seconds....

Benjamin Elder <******@****.***> 1772760338 -0800

- Update default etcd server version to 3.4.13 ([#94536](https://github.com/kubernetes/kubernetes/pull/94536),...

  cluster please make sure that the nodes with version 1.6+ contains this
  label.

### kubectl
* Running `kubectl taint` (alpha in 1.5) against a 1.6 server requires upgrading kubectl to version 1.6
* Running `kubectl taint` (alpha in 1.5) against a 1.5 server requires a kubectl version of 1.5

* Kubectl explain now prints out the Kind and API version of the resource being explained. ([#55689](https://github.com/kubernetes/kubernetes/pull/55689), [@luksa](https://github.com/luksa))

### Cluster Lifecycle

* The default Kubernetes version for kubeadm is now 1.10. ([#61127](https://github.com/kubernetes/kubernetes/pull/61127), [@timothysc](https://github.com/timothysc))

version=${projectVersion}...