With aria live
Passing the aria live flag to the notice component will read the notice out to users if the notice changes, e.g on form submission the notice may go from hidden to visible.
How it looks (preview)
How to call this example
<%= render "govuk_publishing_components/components/notice", {
title: "Your settings have been saved",
description_govspeak: sanitize("<p>This is a confirmation message to tell you your settings have been saved</p>"),
aria_live: true
} %>