es what’s different between Istio 1.19.3 and 1.19.4.</p><div class="relnote-actions call-to-action"><a class=entry href=/v1.24/news/releases/1.19.x/announcing-1.19/upgrade-notes/><h5>BEFORE YOU UPGRADE</h5><p>Things to know and prepare before upgrading.</p></a><a class="update-notice entry" data-title='Update Notice' data-downloadhref=https://github.com/istio/istio/releases/tag/1.19.4 data-downloadbuttontext="DOWNLOAD 1.19.4" data-updateadvice="Before you download 1.19.4, you should know that there's a ne