Version 4.0

Released: November 7, 2023

• Use default display for `summary` element within a Details block, to ensure the toggle icon appears (#58915)
• Update default themes to use new script function signature: the last parameter of `wp_enqueue_script()` is an array instead of the boolean `true` (#59302)
• Use `defer` loading strategy for theme scripts (#59316)

Version 3.9

Released: August 8, 2023

• Remove an unnecessary bottom border from the Table block (#56538)
• Deprecate the skip link focus fix, removing the script from the functions.js file (#54421)
• Remove Internet Explorer-specific checks (#56699)
• Remove call to `load_theme_textdomain()` function if the WordPress version is at least 4.6 (#58318)
• Add "Requires at least" and "Requires PHP" to readme.txt (#57857)

Version 3.8

Released: March 29, 2023

• Improve various globals documentation, as per docblock standards (#57069)
• Remove title attributes (#57199)
• Fix Separator block "Dots" style variation (#56008)
• Bundle Google Fonts locally (#55985)
• Mark strings for screen readers (#29748)
• Use the new `/documentation/` URLs for HelpHub links (#57726)
• Use strict comparison in bundled themes' PHP files. ([55420])
• Improve various globals documentation, as per docblock standards (#57069)

Version 3.7

Released: November 1, 2022

• Multiple Themes: Correctly escape stylesheet URL (#56696)

Version 3.6

Released: May 24, 2022

• Add gradient background options using the theme color scheme (#49762)
• Define List item separator as a WP_Locale property (#39733)
• Rename parameters that use reserved keywords in bundled themes (#55327)
• Note visually hidden text for translators (#55591)

Version 3.5

Released: January 25, 2022

• Remove "role" attribute on HTML5 elements with a default landmark role. (#54079)
• Bundled Themes: Add "Tested up to" in style.css (#53797)

Version 3.4

Released: July 20, 2021

• Add Block Patterns. (#51104)
• Add "No Shadow" style to button block. (#51223)
• Improve display of blocks in widget areas. (#53422)
• Improve the display of the Query Loop block. (#53438)

Version 3.3

Released: March 9, 2021

• Core blocks are positioned incorrectly in some core bundled themes. (#52009)
• Cover block alignment issues. (#51224)

Version 3.2

Released: December 8, 2020

• Prevent incorrect link color within the Social Icon block. (#50809)
• Correct alignment of blocks inside a full-width or wide-width group block. (#51440)
• For image attachments, replace the text "Return to" with "Go to". (#47235)
• Correct list block alignment in editor styles. (#51157)
• Declare support for the HTML5 feature navigation-widgets. (#51445)

Version 3.1

Released: August 11, 2020

• Add custom color palettes for block editor. (#50120)
• Use HTTPS for XHTML Friends Network URL. (#48002)
• Consistently check for WP_Error before outputting get_the_tag_list(). (#39860)
• Use strict type check for in_array() and array_search() where strings are involved. (#49542)

Version 3.0

Released: March 31, 2020

• Update calendar widget styles for 5.4 markup. (#49546)

Version 2.9

Released: May 7, 2019

• Trigger a new `wp_body_open` action immediately after the opening `body` tag, and add shim. (#12563, #46679)
• Use theme version number when enqueuing styles, and correct Genericons stylesheet version number. (#39997)
• Update readme.txt file content to fix validation errors. (#45871)
• Update link to child theme documentation to point to its new locations. (#46450)

Version 2.8

Released: February 21, 2019

• Add escaping to the pingback URL. (#43717)

Version 2.7

Released: January 9, 2019

• Make sure button blocks respect the default rounded style, as well as the squared and outline options. (#45541)
• Bump version numbers of updated scripts and stylesheets to prevent caching. (#45679)

Version 2.6

Released: December 19, 2018

• Update styles so button blocks will apply theme's custom colors. (#45431)
• Correct block appender appearance in block editor. (#45450)
• Remove the term "Gutenberg" from code comments. (#45452)

Version 2.5

Released: December 6, 2018

• Add front end styles, editor styles and a custom color palette for the new block-based editor. Also add support and styles for wide block alignments. (#45041 and #45242)
• Add theme support for responsive block embeds. (#45274)

Version 2.4

Released: May 17, 2018

• Code is Poetry. WordPress' code just... wasn't. (#41057)
• Docs: Remove @summary tags from JSDoc. (#42901)
• Add link to privacy policy page in footer. (#43715)
• Comments: Move comment consent input outside the label for a11y. (#43436)

Version 2.3

Released: November 14, 2017

• Change tag cloud format to a list (ul) for better semantics and accessibility. (#40138)
• Make sure new gallery widgets look good in themes. (#41969)

Version 2.2

Released: June 8, 2017

• Improve styles for 4.8 widgets. (#40745)

Version 2.1

Released: December 6, 2016

• Add preconnect to fonts.gstatic.com. (#37171)

Version 2.0

Released August 15, 2016

• Remove .pot files from Default Themes. (#34884)
• Fix selective refresh of Masonry-laid out widgets by deferring initialization until DOM ready. (#37390)
• Fix PHP 7 compatibility issues. (#37227)
• Update theme tags. (#37426)

Version 1.9

Released April 12, 2016

• Add selective refresh framework with implementation for widgets and re-implementation for nav menus. (#27355)
• Standardize on "front end"/"back end" (noun) and "front-end"/"back-end". (#34887)
• Use selective refresh to preview changes to site title and tagline in core themes. (#27355)
• Prevent elements within fieldsets from overflowing in Webkit. (#35421)
• Removes title attribute from footer. (#35843 )
• Fixes insufficient check for existence of DOM elements in jQuery object. (#34033)
• Update screenshot to 1200 x 900. (#34806)
• Require opt-in for selective refresh of widgets. (#27355)

Version 1.8

Released January 6, 2016

• Add missing loop to image.php template. (#35110)

Version 1.7

Released December 8, 2015

• Correct license information in readme.txt. (#33590)

Version 1.6

Released August 18, 2015

• Add readme file to explain basic theme usage, link to changelog in Codex, and include license information. (#31814)
• Use https for Google API external libraries. (#32552)
• Set the max-width of images in themes to 100%, not in pixels. (#33022 and #31250)
• Fixed: Remove Genericons example.html files.

Version 1.5

Released April 23, 2015

• Fix escaping and minor code style issues (#29127)
• Update editor styles to improve image and caption display in small screens (#31250)
• Replace current() with reset(), which is guaranteed to be the first item (#31259, #31260)
• Update CSS rules for `.screen-reader-text` to be consistent with current accessibility guidelines (#31279)
• Add ARIA attributes to menu toggle and add documentation for new `onResizeARIA` function (#31527)
• Use SSL for theme and author URIs (#31699)
• Make sure submenu links work correctly on small screens with touch events (#31762)
• Add trailing slashes to theme URIs to avoid a redirect (#31839)

Version 1.4

Released: December 18, 2014

• Move the "Continue Reading" arrows back inside the translatable strings so they can be localised. (#30641)
• Use proper way to get customizer settings values. (#29577)
• Replace ellipses appended to automatically generated excerpts with both ellipses and a "Continue Reading" link to meet accessibility-ready requirements. (#30178)
• Fix non-responsive layout in IE8. (#24194)
• Add bottom margin to audio and video players. (#29146)
• Improve keyboard accessibility on Custom Header and Custom Background screen. (#29289)
• Change instances of "Theme Customizer" to just "Customizer", as the Customizer isn't necessarily theme-specific. (#29947)
• Use HTTPS URLs for core.trac.wordpress.org. (#27115)
• Prevent the arrow in "Continue reading" links from wrapping to a second line. (#27908)

Version 1.3

Released: September 4, 2014

• Make small-screen menu accessible to keyboard commands and voice-driven software by using a focusable `button` element rather than `h3` for the toggle element. (#28293)
• Adjust background size of header image(s) for small devices. (#26856)
• Make submenu links work correctly on tablets. (#24767)
• Update to Genericons 3.0.3. (#25391)
• Fix layout issue with search form in older versions of Safari and Android. (#24192)
• Add `accessibility-ready` tag. (#28225)

Version 1.2

Released: May 8, 2014

• Use correct logic in IE conditional comments in header template. (#28151)
• Prevent 'Page %s' from being added to page title on 404 error pages in bundled themes. (#16468)
• Style to support the new HTML5 line-break-less galleries. (#27637)
• Implement HTML5 markup for galleries and captions. (#27502)
• Add Audio, Video, and Gallery Styles to editor styles. (#27462)
• On attachment pages for audio and video, display players. Currently, only a link is displayed. Add minimal CSS rules for compatibility. (#27243)
• In `prepend_attachment`, add logic to support attachment types that are not `image`. (#27243)
• In `get_post_class()`, don't add the `has-post-thumbnail` class for attachment pages. (#27243)
• Improve menu navigation for keyboard and voice-over interactions by properly focusing on submenu items when they are open. (#24839)
• Remove doc block comments for `@return void`. (#27098)
• Don't print the featured image when viewing an attachment. (#27243)
• Update the HTML5 Shiv across the default themes to 3.7.0. (#26491)
• Use the 'display' filter for get_bloginfo( 'name' ) attached to the wp_title filter. (#26811)
• New screenshots at 880x660 to maximize theme goodness in the new theme viewer design. (#26159)
• Add and display new tags to highlight the ever-growing number of responsive themes available. (#21442)
• Implement Microsoft-specific `@viewport` rules for better responsive styling in Windows 8 "snapped" views. (#25888)
• Capitalize "Not Found" string for use in a page title. (#24891, r25907)

Version 1.1

Released: October 24, 2013

• Translator comments are special, make sure they are parsed properly. (#25256)
• Restore the original "Not found" string. (#24891)
• Fix description layout on attachment outputs. (#25578)
• Use correct font name in comment docs. (#25593)
• Don't use /** docblocks for simple multiline comments. (#25256)
• Remove unneeded .single-attachment selector. (#25506)
• Update code comments to reflect WP inline docs standards. (#25256)
• Fix case where comment layout can break if a really, really long word is in the comment content. (#25195)
• Revert combining two similar `Nothing Found` strings. (#24891)
• Ensure custom headers are set up after the localization is initialized. (#24943)

Version 1.0

Released: August 1, 2013

Initial release.