n><li role=none><a role=treeitem title="Istio 1.2 release notes." href=/v1.4/news/releases/1.2.x/announcing-1.2/change-notes/>Change Notes</a></li><li role=none><span role=treeitem class=current title="Important changes operators must understand before upgrading to Istio 1.2.">Upgrade Notes</span></li><li role=none><a role=treeitem title="Details the Helm chart installation options differences between Istio 1.1 and Istio 1.2." href=/v1.4/news/releases/1.2.x/announcing-1.2/helm-changes/>Helm Changes</a></li>