*   A new controller automatically cleans up Certificate Signing Requests that are Approved and Issued, or Denied. ([#51840](https://github.com/kubernetes/kubernetes/pull/51840),[ @jcbsmpsn](https://github.com/jcbsmpsn))

- The `conditionType` is "oneof" approved/denied check of CertificateSigningRequest's `.status.conditions` field was migrated to declarative validation. 
  If the `DeclarativeValidation` feature gate was enabled, mismatches with existing validation are reported via metrics.

- Add a `Patch` method to `ScaleInterface` ([#80699](https://github.com/kubernetes/kubernetes/pull/80699), [@knight42](https://github.com/knight42))

* `kubectl certificate approve|deny` will not modify an already approved or denied CSR unless the `--force` flag is provided. ([#61971](https://github.com/kubernetes/kubernetes/pull/61971), [@smarterclayton](https://github.com/smarterclayton))

### Introducing Windows CSI support alpha for Kubernetes

With the release of Kubernetes 1.18, an alpha version of CSI Proxy for Windows is getting released. CSI proxy enables non-privileged (pre-approved) containers to perform privileged storage operations on Windows. CSI drivers can now be supported in Windows by leveraging CSI proxy.
SIG Storage made a lot of progress in the 1.18 release.

* Fix RBAC role for certificate controller to allow cleaning up of Certificate Signing Requests that are Approved and issued or Denied. ([#59375](https://github.com/kubernetes/kubernetes/pull/59375), [@mikedanese](https://github.com/mikedanese))