021/revision-tags/>revision tags</a>, which lets you mark a revision as &ldquo;production&rdquo; or &ldquo;testing&rdquo; and minimizes the chance of error when upgrading.</p><p>The <code>istioctl tag</code> command has graduated out of experimental in 1.11. You can also now specify a default revision for the control plane. This helps further simplify the canary upgrade from a non-revisioned control plane to a new version.</p><p>We also fixed an <a href=https://github.com/istio/istio/issues/28880>outstandin