[OSDOCS-14690]: Release note about heterogeneous node pools for HCP on IBM Power

Author: lahinson

hosted_control_planes/hosted-control-planes-release-notes.adoc

@@ -33,6 +33,11 @@ Configuring proxy support for {hcp} has a few differences from configuring proxy
 
 In {hcp} for {product-title} 4.18 or later, the default container runtime for worker nodes is changed from runC to crun.
 
+[id="hcp-4-18-ibm-power-heterogeneous_{context}"]
+==== Heterogeneous node pools on agent hosted clusters
+
+In {hcp} on {ibm-power-name}, you can create heterogeneous node pools on agent hosted clusters. Heterogeneous node pools support different configurations so that you can create pools that are optimized for various workloads. For more information, see xref:../hosted_control_planes/hcp-deploy/hcp-deploy-ibm-power.adoc#hcp-ibm-power-heterogeneous-nodepools_hcp-deploy-ibm-power[Creating heterogeneous node pools on agent hosted clusters].
+
 [id="bug-fixes-hcp-rn-4-18_{context}"]
 === Bug fixes