g</a> to the Istio-agent, which provides better Istio Agent SDS performance.</li><li><em><strong>Fixed</strong></em> the Istio Agent certificate provisioning <a href=https://github.com/istio/istio/pull/22617>grace period calculation</a>.</li><li><em><strong>Removed</strong></em> Security alpha API. Security beta API, which was introduced in Istio 1.5, is the only supported security API in Istio 1.6.</li></ul><h2 id=telemetry>Telemetry</h2><ul><li><em><strong>Added</strong></em> experimental support for <a h