OSDCOS#9316:Correct AWS Block in-tree migration info

Author: Lisa Pettyjohn

storage/persistent_storage/persistent-storage-aws.adoc

@@ -47,8 +47,12 @@ storage provider.
 ====
 
 ifndef::openshift-rosa,openshift-dedicated[]
-For {product-title}, automatic migration from AWS EBS in-tree to the Container Storage Interface (CSI) driver is available as a Technology Preview (TP) feature.
-With migration enabled, volumes provisioned using the existing in-tree driver are automatically migrated to use the AWS EBS CSI driver. For more information, see xref:../../storage/container_storage_interface/persistent-storage-csi-migration.adoc#persistent-storage-csi-migration[CSI automatic migration feature].
+[IMPORTANT]
+====
+{product-title} 4.12 and later provides automatic migration for the AWS Block in-tree volume plugin to its equivalent CSI driver.
+
+CSI automatic migration should be seamless. Migration does not change how you use all existing API objects, such as persistent volumes, persistent volume claims, and storage classes. For more information about migration, see xref:../../storage/container_storage_interface/persistent-storage-csi-migration.adoc#persistent-storage-csi-migration[CSI automatic migration].
+====
 endif::openshift-rosa,openshift-dedicated[]
 
 // Defining attributes required by the next module