g> support for Istio canary upgrades. See the <a href=/v1.11/docs/setup/upgrade/>Upgrade guide</a> for more information.</li><li><strong><em>Removed</em></strong> the legacy Helm charts. For migration from them please see the <a href=/v1.11/docs/setup/upgrade/>Upgrade guide</a>.</li><li><strong><em>Added</em></strong> the ability for users to add a custom hostname for istiod.</li><li><strong><em>Changed</em></strong> gateway readiness port used from 15020 to 15021. If you check health on your Istio <code>in