Switch to stable release channel

Author: skrthomas

networking/network_observability/network-observability-operator-release-notes.adoc

@@ -13,6 +13,18 @@ These release notes track the development of the Network Observability Operator
 
 For an overview of the Network Observability Operator, see xref:../../networking/network_observability/network-observability-overview.adoc#dependency-network-observability[About Network Observability Operator].
 
+[id="network-observability-operator-release-notes-1-2"]
+== Network Observability Operator 1.2.0
+
+The following advisory is available for the Network Observability Operator 1.2.0:
+
+* https://access.redhat.com/errata/RHSA-2023:110096[RHSA-2023:110096-03 Network Observability Operator 1.2.0]
+
+[id="network-observability-operator-preparing-to-update"]
+=== Preparing for the next update 
+
+The subscription of an installed Operator specifies an update channel that tracks and receives updates for the Operator. Until the 1.2 release of the Network Observability Operator, the only channel available was `v1.0.x`. The 1.2 release of the Network Observability Operator introduces the `stable` update channel for tracking and receiving updates. You must switch your channel from `v1.0.x` to `stable` to receive future Operator updates. The `v1.0.x` channel is deprecated and planned for removal in a following release.
+
 [id="network-observability-operator-release-notes-1-1"]
 == Network Observability Operator 1.1.0