1.4 to 1.5, you must delete all `PodDisruptionBudget` objects (`policy/v1alpha1/PodDisruptionBudget`) that you have created. It is not possible to delete these objects after you upgrade, and their presence will prevent you from using the beta PodDisruptionBudget feature in 1.5 (which uses `policy/v1beta1/PodDisruptionBudget`). If you have already upgraded, you will need to downgrade the master to 1.4 to delete the `policy/v1alpha1/PodDisruptionBudget` objects.

## External Dependency Version...

- Introduced scheduling.k8s.io/v1alpha2 Workload and PodGroup API to allow for expressing workload-level scheduling requirements and let kube-scheduler act on those. Removed scheduling.k8s.io/v1alpha1 Workload API. ([#136976](https://github.com/kubernetes/kubernetes/pull/136976), [@tosi3k](https://github.com/tosi3k)) [SIG API Machinery, Apps, Auth, CLI, Cloud Provider,...

- [v1.4.0-beta.1](#v140-beta1)
  - [Downloads](#downloads-14)
  - [Changelog since v1.4.0-alpha.3](#changelog-since-v140-alpha3)
    - [Action Required](#action-required)
    - [Other notable changes](#other-notable-changes-16)
- [v1.4.0-alpha.3](#v140-alpha3)
  - [Downloads](#downloads-15)
  - [Changelog since v1.4.0-alpha.2](#changelog-since-v140-alpha2)
    - [Action Required](#action-required-1)