Vulcan/packages/telescope-update-prompt/lib/client/templates/update_banner.html

<template name="update_banner">
  {{#if showBanner}}
    <div class="update-banner grid-module grid banner">
      <h3 class="update-version">{{version}}</h3>
      <div class="update-content">
        <h4 class="update-prompt">A new version of Telescope is available.</h4>
        <p class="update-message">
          You have: {{currentVersion}}. Note: this message is only displayed to admins. 
          <a href="https://github.com/TelescopeJS/Telescope/blob/master/History.md" target="_blank">Learn more</a> 
          </p>
      </div>
    </div>
  {{/if}}
</template>