5.5</h1><p>Istio 1.15.5 patch release.</p></div><p class=post-author>Jan 30, 2023</p><div><p>This release contains bug fixes to improve robustness. This release note describes what’s different between Istio 1.15.4 and Istio 1.15.5.</p><div class="relnote-actions call-to-action"><a class=entry href=/v1.19/news/releases/1.15.x/announcing-1.15/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-downloa