* Implementers of the cloud provider interface will note the addition of a context to this interface. Trivial code modification will be necessary for a cloud provider to continue to compile. ([#59287](https://github.com/kubernetes/kubernetes/pull/59287), [@cheftako](https://github.com/cheftako))

  * After your master is upgraded to 1.6, you will need to update your PodSpecs to set the `tolerations` field of the PodSpec and remove the `scheduler.alpha.kubernetes.io/tolerations` annotation on the Pod. (It's not strictly necessary to remove the annotation, as it will have no effect once you upgrade to 1.6.) Between the time the master is upgraded to 1.6 and when you do this, tolerations attached to Pods that are created will have no effect. Pods that are already running will...

- resource metrics endpoint `/metrics/resource/v1alpha1` as well as all metrics under this endpoint have...

- Simple script based hyperkube image that bundles all the necessary binaries. This is an equivalent replacement for the image based on the go based hyperkube command + image. ([#84662](https://github.com/kubernetes/kubernetes/pull/84662), [@dims](https://github.com/dims))

### Namespace

- DRA: when the scheduler had to deallocate a claim after a node became unsuitable for a pod, it might have needed more attempts than really necessary. This was fixed by first disabling allocations. ([#120428](https://github.com/kubernetes/kubernetes/pull/120428), [@pohly](https://github.com/pohly))

- The initialization of nodes using external cloud providers now waits for the providerID value to be available before untainting it. This ensures that nodes are not declared Ready without necessary information such as the providerID and zone labels, which are required for integrations like load balancers to function correctly. Cloud providers that do not implement the GetInstanceProviderID method will not require the providerID to be set and...

</li>

<li>
After substitution, each type argument must <a href="#Satisfying_a_type_constraint">satisfy</a>
the <a href="#Type_parameter_declarations">constraint</a> (instantiated, if necessary)
of the corresponding type parameter. Otherwise instantiation fails.
</li>
</ol>

<p>
Instantiating a type results in a new non-generic <a href="#Types">named type</a>;

- The `SupportNodePidsLimit` feature is now beta, and enabled by default.  It is no longer necessary to set the feature gate `SupportNodePidsLimit=true`. ([#76221](https://github.com/kubernetes/kubernetes/pull/76221), [@RobertKrawitz](https://github.com/RobertKrawitz))

- kube-controller-manager currently needs a writable `--cert-dir` (default is `/var/run/kubernetes`)...