Hey Stefano,

When you go to 'Customize design' and click the 'Edit code' button of your theme. Look for the file: 'home_page.hbs'

Starting at line 39 you'll find something like this:

    {{#if promoted_articles}}
      <section class="articles">
        <h3>{{t 'promoted_articles'}}</h3>
        <ul class="article-list promoted-articles">
          {{#each promoted_articles}}
            <li class="promoted-articles-item">
              <a href="{{url}}">
                {{title}}
              </a>
            </li>
          {{/each}}
        </ul>
      </section>
    {{/if}}

Now you can edit the line with {{title}} to something like this:

{{title}} - <i>{{date edited_at}}</i>

To get this result:

You can also use something like {{date edited_at timeago=true}} so it will display '10 minutes ago' and you probably want to make it look better. Maybe on a new line and with a smaller font or so.