- The calculations for Pod topology spread skew now exclude nodes that
  don't match the node affinity/selector. This may lead to unschedulable pods if you previously had pods
  matching the spreading selector on those excluded nodes (not matching the node affinity/selector),
  especially when the `topologyKey` is not node-level. Revisit the node affinity and/or pod selector in the

 - Newly provisioned PVs by Azure disk will no longer have the beta `FailureDomain` label. Azure disk volume plugin will start to have GA topology label instead. ([#101534](https://github.com/kubernetes/kubernetes/pull/101534), [@kassarl](https://github.com/kassarl))

- Reminder: The labels "failure-domain.beta.kubernetes.io/zone" and "failure-domain.beta.kubernetes.io/region" are deprecated in favor of "topology.kubernetes.io/zone" and "topology.kubernetes.io/region" respectively.  All users of the "failure-domain.beta..." labels should switch to the "topology..." equivalents. ([#96033](https://github.com/kubernetes/kubernetes/pull/96033), [@thockin](https://github.com/thockin)) [SIG API Machinery, Apps, CLI, Cloud Provider, Network,...

## New Features

- Prevented any type of CPU/Memory alignment or hint generation with the Topology Manager from the CPU or Memory Manager when pod-level resources were used in the Pod spec. ([#133279](https://github.com/kubernetes/kubernetes/pull/133279), [@ffromani](https://github.com/ffromani)) [SIG Node and Testing]

- Fixed Cronjob `status.lastSuccessfulTime` not populated by a manually triggered ([#118530](https://github.com/kubernetes/kubernetes/pull/118530), [@carlory](https://github.com/carlory))
- Fixed Topology Aware Hints not working when the `topology.kubernetes.io/zone` label is added after Node creation. ([#117245](https://github.com/kubernetes/kubernetes/pull/117245), [@tnqn](https://github.com/tnqn))

In Kubernetes 1.19 this feature will be enabled by default with kube-proxy reading from EndpointSlices instead of Endpoints. Although this will mostly be an invisible change, it should result in noticeable scalability improvements in large clusters. It will also enable significant new features in future Kubernetes releases like Topology Aware Routing.

* Provided API support for external CSI storage drivers to support block volumes. ([#64723](https://github.com/kubernetes/kubernetes/pull/64723), [@vladimirvivien](https://github.com/vladimirvivien))
* Volume topology aware dynamic provisioning for external provisioners is now supported. ([#63193](https://github.com/kubernetes/kubernetes/pull/63193), [@lichuqiang](https://github.com/lichuqiang))

### Bug or Regression

- Fix Topology Aware Hints not working when the `topology.kubernetes.io/zone` label is added after Node creation

  that was previously rejected by the VolemeZone plugin if  addition/update of node, 
  addition/update of PV, addition/update of PVC, or addition of SC matches pod's topology settings. ([#124996](https://github.com/kubernetes/kubernetes/pull/124996), [@Gekko0114](https://github.com/Gekko0114)) [SIG Scheduling and Storage]
- Kube-scheduler implements scheduling hints for the VolumeZone plugin.