Update release notes & upgrade steps (#553)

content/docs/csidriver/release/powerstore.md

@@ -9,10 +9,14 @@ description: Release notes for PowerStore CSI driver
 
 - [Added support for Resiliency](https://github.com/dell/csm/issues/587)
 - [Added support for Kubernetes 1.26](https://github.com/dell/csm/issues/597)
+- [Added support for MKE 3.6.x](https://github.com/dell/csm/issues/672)
+- [Added support for RKE 1.4.1](https://github.com/dell/csm/issues/670)
 
 ### Fixed Issues
 
-- [Fixed issue where driver was not properly cleaning up resources when volumes were unmounted](https://github.com/dell/csm/issues/666)
+- [Multiple iSCSI network support](https://github.com/dell/csm/issues/668)
+- [Create volume successful but unable to map volumes to a hosts](https://github.com/dell/csm/issues/599)
+- [Can't find IP in X_CSI_POWERSTORE_EXTERNAL_ACCESS for NFS provisioning](https://github.com/dell/csm/issues/689)
 
 ### Known Issues
 
@@ -25,5 +29,4 @@ description: Release notes for PowerStore CSI driver
 
 ### Note:
 
-- Support for Kubernetes alpha features like Volume Health Monitoring and RWOP (ReadWriteOncePod) access mode will not be available in Openshift environment as Openshift doesn't support enabling of alpha features for Production Grade clusters.
-- This release is only supported when driver is installed via helm.
+- Support for Kubernetes alpha features like Volume Health Monitoring and RWOP (ReadWriteOncePod) access mode will not be available in Openshift environment as Openshift doesn't support enabling of alpha features for Production Grade clusters.

content/docs/csidriver/upgradation/drivers/powerstore.md

@@ -32,3 +32,13 @@ Note: While upgrading the driver via helm, controllerCount variable in myvalues.
 4. Create the secret by running ```kubectl create secret generic powerstore-config -n csi-powerstore --from-file=config=secret.yaml```
 5. Copy the default values.yaml file `cd dell-csi-helm-installer && cp ../helm/csi-powerstore/values.yaml ./my-powerstore-settings.yaml` and update parameters as per the requirement.
 6. Run the `csi-install` script with the option _\-\-upgrade_ by running: `./csi-install.sh --namespace csi-powerstore --values ./my-powerstore-settings.yaml --upgrade`.
+
+## Upgrade using Dell CSI Operator:
+
+**Notes:**
+1. While upgrading the driver via operator, replicas count in sample CR yaml can be at most one less than the number of worker nodes.
+2. Upgrading the Operator does not upgrade the CSI Driver.
+
+
+1. Please upgrade the Dell CSI Operator by following [here](./../operator).
+2. Once the operator is upgraded, to upgrade the driver, refer [here](./../../../installation/operator/#update-csi-drivers).