- **Stateful Application Support**
  - Enhanced persistence capabilities (eg: `StorageClasses`, new volume plugins)
  - New resources and scheduler features (eg: `ScheduledJob` resource, pod/node affinity/anti-affinity)
- **Cluster Federation**
  - Global Multi-cluster HTTP(S) Ingress across GCE and GKE clusters.
  - Expanded support for federated hybrid-cloud resources including ReplicaSets, Secrets, Namespaces and Events.

- Changed the error message displayed when a pod is trying to attach a volume that does not match the label/selector from "x node(s) had volume node affinity conflict" to "x node(s) didn't match PersistentVolume's node affinity". ([#129887](https://github.com/kubernetes/kubernetes/pull/129887), [@rhrmo](https://github.com/rhrmo)) [SIG Scheduling and Storage]

- Fixed queue hint for inter-pod anti-affinity in case deleted pod's anti-affinity matched the pending pod, which might have caused delays in scheduling. ([#135325](https://github.com/kubernetes/kubernetes/pull/135325), [@brejman](https://github.com/brejman)) [SIG Scheduling and Testing]

- 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

* Cloud Controller Manager now sets Node.Spec.ProviderID ([#50730](https://github.com/kubernetes/kubernetes/pull/50730), [@andrewsykim](https://github.com/andrewsykim))
* Parameterize session affinity timeout seconds in service API for Client IP based session affinity. ([#49850](https://github.com/kubernetes/kubernetes/pull/49850), [@m1093782566](https://github.com/m1093782566))

* Disable session affinity for internal kubernetes service - Backport of [#56690](https://github.com/kubernetes/kubernetes/pull/56690) to 1.10 release branch ([#65177](https://github.com/kubernetes/kubernetes/pull/65177), [@afritzler](https://github.com/afritzler))

- Moving `WindowsHostProcessContainers` feature to beta ([#106058](https://github.com/kubernetes/kubernetes/pull/106058), [@marosset](https://github.com/marosset))
- Node affinity, Node selectors, and tolerations are now mutable for Jobs that are suspended and have never been started ([#105479](https://github.com/kubernetes/kubernetes/pull/105479), [@ahg-g](https://github.com/ahg-g))

  the correct number of rules, rather than being off by one.
  
  Fixed multiple iptables proxy regressions introduced in 1.22:
  
    - When using Services with SessionAffinity, client affinity for an
      endpoint now gets broken when that endpoint becomes non-ready
      (rather than continuing until the endpoint is fully deleted).
  
    - Traffic to a service IP now starts getting rejected (as opposed to

- Made node affinity in Persistent Volume mutable. ([#134339](https://github.com/kubernetes/kubernetes/pull/134339), [@huww98](https://github.com/huww98)) [SIG API Machinery, Apps and Node]

- Kube-scheduler: fixes a 1.30 regression that can lead to a scheduler crash when processing pods with affinity that doesn't match a real/valid node ([#125039](https://github.com/kubernetes/kubernetes/pull/125039), [@AxeZhan](https://github.com/AxeZhan)) [SIG Scheduling and Testing]