WordPress 5.2 “Jaco” was released on 7th May 2019.

The PHP source has been re-parsed across all subdomains.

Block changes

Block changes

There are a number of new core blocks, bringing the total number of core blocks to 39.

• Calendar – core/calendar
• RSS – core/rss
• Search – core/search
• Tag Cloud – core/tag-cloud

There is a new core-embed block.

• Amazon Kindle – core-embed/amazon-kindle

And some have simply been deleted.

Funny or Die – core-embed/funnyordie, Photobucket – core-embed/photobucket

WordPress 5.2 also introduces the Block Manager Tool, which allows you to choose the blocks that are available to you.

Core blocks

Archives – core/archives
Display a monthly archive of your posts.

Audio – core/audio
Embed a simple audio player.

Button – core/button
Prompt visitors to take action with a button-style link.

Calendar – core/calendar
A calendar of your site’s posts.

Categories – core/categories
Display a list of all categories.

Classic – core/freeform
Use the classic WordPress editor.

Code – core/code
Display code snippets that respect your spacing and tabs.

Column – core/column
A single column within a columns block.

Columns – core/columns
Add a block that displays content in multiple columns, then add whatever content blocks you’d like.

Cover – core/cover
Add an image or video with a text overlay — great for headers.

Custom HTML – core/html
Add custom HTML code and preview it as you edit.

Embed – core/embed
Embed videos, images, tweets, audio, and other content from external sources.

File – core/file
Add a link to a downloadable file.

Gallery – core/gallery
Display multiple images in a rich gallery.

Heading – core/heading
Introduce new sections and organize content to help visitors (and search engines) understand the structure of your content.

Image – core/image
Insert an image to make a visual statement.

Latest Comments – core/latest-comments
Display a list of your most recent comments.

Latest Posts – core/latest-posts
Display a list of your most recent posts.

List – core/list
Create a bulleted or numbered list.

Media & Text – core/media-text
Set media and words side-by-side for a richer layout.

More – core/more
Content before this block will be shown in the excerpt on your archives page.

Page Break – core/nextpage
Separate your content into a multi-page experience.

Paragraph – core/paragraph
Start with the building block of all narrative.

Preformatted – core/preformatted
Add text that respects your spacing and tabs, and also allows styling.

Pullquote – core/pullquote
Give special visual emphasis to a quote from your text.

Quote – core/quote
Give quoted text visual emphasis. “In quoting others, we cite ourselves.” — Julio Cortázar

Reusable Block – core/block
Create content, and save it for you and other contributors to reuse across your site. Update the block, and the changes apply everywhere it’s used.

Reusable Template – core/template
Template block used as a container.

RSS – core/rss
Display entries from any RSS or Atom feed.

Search – core/search
Help visitors find your content.

Separator – core/separator
Create a break between ideas or sections with a horizontal separator.

Shortcode – core/shortcode
Insert additional custom elements with a WordPress shortcode.

Spacer – core/spacer
Add white space between blocks and customize its height.

Subheading (deprecated) – core/subhead
This block is deprecated. Please use the Paragraph block instead.

Table – core/table
Insert a table — perfect for sharing charts and data.

Tag Cloud – core/tag-cloud
A cloud of your most used tags.

Text Columns (deprecated) – core/text-columns
This block is deprecated. Please use the Columns block instead.

Unrecognized Block – core/missing
Your site doesn’t include support for this block.

Verse – core/verse
Insert poetry. Use special spacing formats. Or quote song lyrics.

Video – core/video
Embed a video from your media library or upload a new one.

Core embed blocks

Amazon Kindle – core-embed/amazon-kindle
Embed Amazon Kindle content.

Animoto – core-embed/animoto
Embed an Animoto video.

Cloudup – core-embed/cloudup
Embed Cloudup content.

CollegeHumor – core-embed/collegehumor
Embed CollegeHumor content.

Crowdsignal – core-embed/crowdsignal
Embed Crowdsignal (formerly Polldaddy) content.

Dailymotion – core-embed/dailymotion
Embed a Dailymotion video.

Facebook – core-embed/facebook
Embed a Facebook post.

Flickr – core-embed/flickr
Embed Flickr content.

Hulu – core-embed/hulu
Embed Hulu content.

Imgur – core-embed/imgur
Embed Imgur content.

Instagram – core-embed/instagram
Embed an Instagram post.

Issuu – core-embed/issuu
Embed Issuu content.

Kickstarter – core-embed/kickstarter
Embed Kickstarter content.

Meetup.com – core-embed/meetup-com
Embed Meetup.com content.

Mixcloud – core-embed/mixcloud
Embed Mixcloud content.

Polldaddy – core-embed/polldaddy
Embed Polldaddy content.

Reddit – core-embed/reddit
Embed a Reddit thread.

ReverbNation – core-embed/reverbnation
Embed ReverbNation content.

Screencast – core-embed/screencast
Embed Screencast content.

Scribd – core-embed/scribd
Embed Scribd content.

Slideshare – core-embed/slideshare
Embed Slideshare content.

SmugMug – core-embed/smugmug
Embed SmugMug content.

SoundCloud – core-embed/soundcloud
Embed SoundCloud content.

Speaker – core-embed/speaker
Add a block that displays content pulled from other sites, like Twitter, Instagram or YouTube.

Speaker Deck – core-embed/speaker-deck
Embed Speaker Deck content.

Spotify – core-embed/spotify
Embed Spotify content.

TED – core-embed/ted
Embed a TED video.

Tumblr – core-embed/tumblr
Embed a Tumblr post.

Twitter – core-embed/twitter
Embed a tweet.

VideoPress – core-embed/videopress
Embed a VideoPress video.

Vimeo – core-embed/vimeo
Embed a Vimeo video.

WordPress – core-embed/wordpress
Embed a WordPress post.

WordPress.tv – core-embed/wordpress-tv
Embed a WordPress.tv video.

YouTube – core-embed/youtube
Embed a YouTube video.

For more information on WordPress 5.2 see the release note
https://wordpress.org/support/wordpress-version/version-5-2/