The shortcode widget:

The Archive Widget:

The same Archive widget but as a dropdown:

The Category widget block has an additional option for showing category hierarchies:

The Latest Comments widget can display or hide the avatars, the date, and the comment excerpt:

Here is an example of the Comments widget with all the options disabled. The number of comments has been reduced to two.

And here is the Latest Posts widget in the list view, with dates:

Grid view, now sorted from A -Z.

You can also change the number of columns used to display the latest posts. The block below only displays posts from the Block category:

Search widget:

Tag Cloud widget:

RSS Feed widget:

<!-- wp:paragraph --> <p>This post tests various embed blocks:</p> <!-- /wp:paragraph --> <!-- wp:core-embed/twitter {"url":"https://twitter.com/WordPress/status/1057136472321613824","type":"rich","providerNameSlug":"twitter","align":"wide","className":""} --> <figure class="wp-block-embed-twitter alignwide wp-block-embed is-type-rich is-provider-twitter"><div class="wp-block-embed__wrapper"> https://twitter.com/WordPress/status/1057136472321613824 </div><figcaption>Twitter,  wide width</figcaption></figure> <!-- /wp:core-embed/twitter --> <!-- wp:core-embed/youtube {"url":"https://youtu.be/ex8fMxXJDJw","type":"video","providerNameSlug":"youtube","className":"wp-embed-aspect-16-9 wp-has-aspect-ratio"} --> <figure class="wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper"> https://youtu.be/ex8fMxXJDJw </div><figcaption>YouTube<br></figcaption></figure> <!-- /wp:core-embed/youtube --> <!-- wp:core-embed/facebook {"url":"https://www.facebook.com/6427302910/posts/10156380423617911/","type":"rich","providerNameSlug":"facebook","className":""} --> <figure class="wp-block-embed-facebook wp-block-embed is-type-rich is-provider-facebook"><div class="wp-block-embed__wrapper"> https://www.facebook.com/6427302910/posts/10156380423617911/ </div></figure> <!-- /wp:core-embed/facebook --> <!-- wp:core-embed/instagram {"url":"https://www.instagram.com/p/BpmueLLgEn_/?utm_source=ig_share_sheet\u0026igshid=1hcxphic7p9e2","type":"rich","providerNameSlug":"instagram","className":""} --> <figure class="wp-block-embed-instagram wp-block-embed is-type-rich is-provider-instagram"><div class="wp-block-embed__wrapper"> https://www.instagram.com/p/BpmueLLgEn_/?utm_source=ig_share_sheet&igshid=1hcxphic7p9e2 </div></figure> <!-- /wp:core-embed/instagram --> <!-- wp:core-embed/wordpress-tv {"url":"https://wordpress.tv/2018/10/14/kjell-reigstad-allan-cole-how-we-made-our-first-gutenberg-powered-theme/","type":"video","providerNameSlug":"","align":"full","className":"wp-embed-aspect-16-9 wp-has-aspect-ratio"} --> <figure class="wp-block-embed-wordpress-tv alignfull wp-block-embed is-type-video wp-embed-aspect-16-9 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper"> https://wordpress.tv/2018/10/14/kjell-reigstad-allan-cole-how-we-made-our-first-gutenberg-powered-theme/ </div><figcaption>WordPress TV, full width<br></figcaption></figure> <!-- /wp:core-embed/wordpress-tv --> <!-- wp:paragraph --> <p></p> <!-- /wp:paragraph -->

The Layout Elements category includes the following blocks: Group, Button, Columns, Media & Text, separator, spacer, read more, and page break.

This group block has a light green background color.

The read more block should be right below this text, but only on list pages of themes that show the full content. It won't show on the single page or on themes showing excerpts.

The columns:

Column two.

Column three.

Column four.

Media &Text

For displaying media and text next to each other. By default, the media is to the left.

This time our block is full width, and the image is to the right.

The background color is a pale blue. 

Test to make sure that the editor and the front match. To test the Stack on mobile setting, reduce the browser window width.

The control these settings, the block uses the css classes "has-media-on-the-right" and "is-stacked-on-mobile".

The separator has three styles: default, wide line, and dots.

The spacer block has a default height of 100 pixels:

And finally, the page break:

This paragraph block is on page two, after the page break.