* [stable] [cri-o](https://github.com/kubernetes-incubator/cri-o): CRI implementation for OCI-based runtimes [[@mrunalp](https://github.com/mrunalp)]

  * Passed all the Kubernetes 1.7 end-to-end conformance test suites.
  * Verification against Kubernetes 1.8 is planned soon after the release.

- Added swap to stats to Summary API and Prometheus endpoints (stats/summary and /metrics/resource). ([#118865](https://github.com/kubernetes/kubernetes/pull/118865), [@iholder101](https://github.com/iholder101))
- Added the implementation for `PodRecreationPolicy` to wait for the creation of pods once the existing ones are fully terminated. ([#117015](https://github.com/kubernetes/kubernetes/pull/117015), [@kannon92](https://github.com/kannon92))

### SIG-OpenStack

* Introduce Alpha field `Immutable` in both Secret and ConfigMap objects to mark their contents as immutable. The implementation is hidden behind feature gate `ImmutableEphemeralVolumes` (currently in Alpha stage). ([#86377](https://github.com/kubernetes/kubernetes/pull/86377), [@wojtek-t](https://github.com/wojtek-t))

### Azure

SIG Azure worked on improvements in the cloud provider, including significant work on the Azure Load Balancer implementation.

### Cluster Lifecycle

### Bug or Regression

- Adds node event handlers to dual stack kube-proxy implementation to fix Topology Aware Hints. ([#101054](https://github.com/kubernetes/kubernetes/pull/101054), [@robscott](https://github.com/robscott)) [SIG Network]

  - `service.kubernetes.io/topology-aware-hints` annotation has been deprecated.
  - kube-proxy now accepts any value that is not "disabled" for these annotations, enabling custom implementation-specific and/or future built-in heuristics to be used. ([#116522](https://github.com/kubernetes/kubernetes/pull/116522), [@robscott](https://github.com/robscott)) [SIG Apps, Network and Testing]

* Attempt 2: Bump GCE containerVM to container-v1-3-v20160517 (Docker 1.11.1) again. ([#26001](https://github.com/kubernetes/kubernetes/pull/26001), [@dchen1107](https://github.com/dchen1107))
* Downward API implementation for resources limits and requests ([#24179](https://github.com/kubernetes/kubernetes/pull/24179), [@aveshagarwal](https://github.com/aveshagarwal))

increased from v1alpha1 to v1alpha2. Runtimes implementing the CRI will need to update to the new version, which configures container namespaces using an enumeration rather than booleans. This change to the alpha API is not backwards compatible; implementations of the CRI such as containerd, will need to update to the new API version. ([#58973](https://github.com/kubernetes/kubernetes/pull/58973), [@verb](https://github.com/verb))

* The default Flexvolume plugin directory for COS images...

- QueueingHint implementation for NodeAffinity is reverted because we found potential scenarios where events that make Pods schedulable could be missed. ([#122327](https://github.com/kubernetes/kubernetes/pull/122327), [@sanposhiho](https://github.com/sanposhiho)) [SIG Scheduling]