diff --git a/release_notes/ocp-4-6-release-notes.adoc b/release_notes/ocp-4-6-release-notes.adoc
index a2d11de64210..960456566617 100644
--- a/release_notes/ocp-4-6-release-notes.adoc
+++ b/release_notes/ocp-4-6-release-notes.adoc
@@ -61,6 +61,25 @@ This release adds improvements related to the following components and concepts.
 
 {product-title} 4.6 introduces the following notable technical changes.
 
+[id="ocp-4-6-osdk"]
+==== Operator SDK v0.19.1
+{product-title} 4.6 supports Operator SDK v0.19.1, which introduces the following notable technical changes:
+
+* The command `run --local` has been deprecated in favor of `run local`.
+* The commands `run --olm` and `--kubeconfig` have been deprecated in favor of` `run packagemanifests`.
+* The default CRD version  has been changed from `apiextensions.k8s.io/v1beta1` to `apiextensions.k8s.io/v1` for commands that create or generate CRDs.
+* The `--kubeconfig` flag has been added to the `<run|cleanup> packagemanifests` command.
+
+Ansible-based Operator enhancements include:
+
+* The Ansible Operator now includes a `healthz` endpoint and `liveness` probe.
+
+Helm-based Operator enhancements include:
+
+* Helm Operators can watch and reconcile when cluster-scoped release resources are changed.
+* Helm Operators can now reconcile logic using three-way strategic merge patches for native Kubernetes objects so that array patch strategies are correctly honored and applied.
+* Helm Operators have the default API version changed to `helm.operator-sdk/v1alpha1`.
+
 [id="ocp-4-6-ovn-k8s-default-cni-np-uses-ovs-on-cluster-nodes"]
 ==== OVN-Kubernetes default CNI network provider now uses OVS installed on cluster nodes