Joomla! 5.1.0 RC1

👀 Release information

• 💁 41+ contributors
• 🧰 303+ Pull Requests has been merged
• ⬆️ New migration guide
• 📖 New developer documentation
• 🌎 Release page
• 👀 Full Changelog

🚀 Download information

Note

Userfacing information about this Joomla! release can be found on the release page

🔥 Installation Packages

New Joomla! Installations	SHA-256 Checksums
ZIP Archive (.zip)	93d2deca81af2cf4006837ed64566c10c061f4731241d3c772aa0569ff6ec8fa
GNU Zip Archive (.tar.gz)	6a0522e7df342d77c279df5a671b25a0f5e1661627cb68fbe4701979ec79a17e
Zstandard Archive (.tar.zst)	745f15037baef78fc57c8cdbbe34d25dbdfd9ffaf445b1df59ed7947a0cbe1e4

Additional and a second source of checksums can be found at our official download page. If you need further information on how to validate a release package please visit our documentation.

✒️ Upgrade Packages

Important

Don't update directly from a version lower than 4.4 it is important that you first update to 4.4 and then update to 5.x

Update from a previous version	SHA-256 Checksums
ZIP Archive (.zip)	cfc960dc0dcd4ba5aaa7c7f0cc5a8e1b827015dbcabf6d4165f37dede9bfb449
GNU Zip Archive (.tar.gz)	5038a6af8b81d5e80df50ad1627198c8af95c8792278f12b45801269ea3cfa10
Zstandard Archive (.tar.zst)	5ed7720c99c32c785d9d8b56a2a5bfd52321ed735268ca7a902961adc6416658

Additional and a second source of checksums can be found at our official download page. If you need further information on how to validate a release package please visit our documentation.

💆 New Contributors

• @akfaisel made their first contribution in #42395
• @adamchaboryk made their first contribution in #42780
• @joomlaweby made their first contribution in #42845
• @AlexanderCkm made their first contribution in #42819

🧹 What has been changed

• [5.1] typo Update state.es6.js by @brianteeman in #42059
• [5.1] version update by @LadySolveig in #42061
• [5.1] upmerges - 2023-10-05 by @LadySolveig in #42062
• [5.1] change version manifest by @LadySolveig in #42095
• [5.1] upmerges 2023-10-09 by @LadySolveig in #42097
• [5.1] upmerges 2023-10-16 by @LadySolveig in #42146
• [5.1] upmerges 2023-10-21 by @LadySolveig in #42188
• [5.1] Load plugin group when executing batch tasks by @Hackwar in #39013
• [5.1] com_installer getListQuery by @brianteeman in #42140
• [5.1] Alias string consistency by @brianteeman in #42220
• [5.1] upmerge 2023-10-26 by @Razzo1987 in #42223
• [5.1] upmerges 2023-11-01 by @LadySolveig in #42270
• [5.1] Redundant else usage by @Denitz in #41983
• [5.1] Fixing packaging and nightly builds by @Hackwar in #42275
• [5.1] Add Global Setting for Form Layout option to custom fields by @AndySDH in #37320
• [5.1] Add SVG support to mod_banners by @obuisard in #41854
• [5.1] Add Tag Relationship in ContentSerializer.php by @alexandreelise in #42244
• Revert changes in header block from PR #42244 by @LadySolveig in #42278
• [5.1] upmerges 2023-11-07 by @LadySolveig in #42309
• [5.1] Cleanup input options by @wilsonge in #42166
• Update BannerHelper.php with better deprecation information by @obuisard in #42282
• [5.1] Use Dialog field for Modal_Category by @Fedik in #42293
• [5.1] Use Dialog field for Modal_Contact by @Fedik in #42326
• [5.1] Use Dialog field for Modal_Newsfeed by @Fedik in #42327
• [5.1] Use Dialog for Batch windows by @Fedik in #42328
• [5.1] upmerges 2023-11-18 by @LadySolveig in #42363
• [5.1] Update deleted files list in script.php for 5.1.0-alpha1 by @richard67 in #42364
• 5.1.0 not 5.1.1 yet by @alikon in #42398
• [5.1] upmerges 2023-11-25 by @LadySolveig in #42400
• [5.1] Workflows missing strings by @brianteeman in #42390
• [5.1] webauthn missing string by @brianteeman in #42393
• [5.1][com_actionlog] synch extension to log with email notification by @alikon in #38588
• [5.1] resolve todo image filter by @brianteeman in #41885
• [5.1] Joomla Update: Improving error handling when writing files by @Hackwar in #41096
• [5.1] Use Dialog for ContentHistory field by @Fedik in #42454
• [5.1] Fix category select in CategoryModal field by @Fedik in #42391
• [5.1] Use Dialog for Shortcut overview by @Fedik in #42081
• [5.1] Use Dialog for Multilanguage status overview by @Fedik in #42082
• [5.1] Use Dialog for Field Media and Editor Media button by @Fedik in #42288
• [5.1] Api privacy tests by @brianteeman in #42521
• [5.1] Upmerge 2023-12-17 by @LadySolveig in #42535
• [5.1] Api redirect tests by @brianteeman in #42522
• [5.1] Api media test by @brianteeman in #42512
• [5.1] Upmerge 2023-12-18 by @LadySolveig in #42547
• [5.1] upmerge 2023-12-21 by @Razzo1987 in #42556
• [5.1] Api categories tests by @brianteeman in #42513
• Fix actionlogs information emails containing HTML links by @ManuelHu in #40033
• [5.1] Generic doc icon by @brianteeman in #42527
• [5.1] upmerge 2024-01-04 by @Razzo1987 in #42609
• [5.1] add language deprecation for #37320 by @heelc29 in #42584
• [5.1] Tests readme by @brianteeman in #42505
• Revert "[5.1] upmerge 2024-01-04" by @Razzo1987 in #42620
• [5.1] upmerge 2024-01-04 fix by @Razzo1987 in #42624
• [5.1] Uninstall child of package by @brianteeman in #42607
• [5.1] Article Schemaorg plugin by @brianteeman in #42402
• [5.1] Use Dialog for Plugin editing by @Fedik in #42447
• [5.0] Tags: Add rebuild button to toolbar by @Hackwar in #42586
• [5.1] Invalid class by @Denitz in #41973
• [5.1] Subform rows sorting with buttons, addittionaly to drag and drop by @Fedik in #42334
• [5.1] CLI: Core Update - improve output by @Hackwar in #42601
• [5.1] Use Dialog for Module editing by @Fedik in #42423
• [5.1] Add toolbar buttons in language installation toolbar by @LadySolveig in #42610
• [5.1] Unification patch for PR #42610 by @tecpromotion in #42663
• [5.1] upmerge 2024-01-17 by @LadySolveig in #42667
• [5.1] CLI: Renaming and improving output of core:update:check by @Hackwar in #42594
• [5.1] CLI: Adding command to manage Joomla core update channels by @Hackwar in #42597
• Update passwordstrength.es6.js by @akfaisel in #42395
• [5.1] upmerge 2024-01-23 by @LadySolveig in #42701
• com_contact. Rm unused order_up, order_dn by @ReLater in #42581
• [5.1] Convert mod_banners to service provider by @heelc29 in #42214
• Fixing missing support for "Subcategory Levels" parameter in contacts category view by @artur-stepien in #41618
• Change type of field "value" in table #_fields_values from text to mediumtext by @sergeytolkachyov in #42606
• [5.1] Update FontAwesome to 6.5.1 by @C-Lodder in #42721
• [5.1] Useless isset argument by @Denitz in #41968
• [5.1] Use Dialog for Batch for Redirect component by @Fedik in #42355
• [5.1] HTML Mail template images by @brianteeman in #42448
• [5.1] WebAsset fix for calling the onAttachCallback, and cache for tree sorting to improve performance by @Fedik in #42661
• [5.1] Use Dialog for extensions changelog by @Fedik in #42453
• [5.1] Add main region on error page by @Razzo1987 in #42719
• [5.1] Use Dialog for scheduler task "Run test" by @Fedik in #42746
• [5.1] Replace deprecated KeyboardEvent code by @C-Lodder in #42715
• [5.1] Template Long Description by @brianteeman in #42651
• Add link to JED - schema plugins category in schema plugin form by @LadySolveig in #42747
• [5.0] Switching Input object from CMS to framework class by @Hackwar in #40415
• [5.1] Upmerge 2024-02-04 by @Razzo1987 in #42759
• Revert "[5.0] Switching Input object from CMS to framework class" by @LadySolveig in #42764
• [5.1] Update deleted files list in script.php for 5.1.0-alpha4 by @richard67 in #42785
• [5.1] upmerge 2024-02-11 by @LadySolveig in #42789
• [4.4] Update phpseclib to 3.0.34 by @SniperSister in #42470
• [5.1] Guided Tours - Add checkbox/radio/select target element support, enhanced required field handling by @GeraintEdwards in #40994
• [5.1] Update Jooa11y with latest Sa11y build (Attempt #2) by @adamchaboryk in #42780
• [4.4] Finder: Fixing language of token by @Hackwar in #42693
• [4.4] Fix help icon not opening help screen by @Quy in #42820
• [4] Module 'Feed Display': deprecated Notice by @alikon in #42803
• [4.4] tags learn more link by @brianteeman in #42815
• [4.4] Composer update joomla/filter to 2.0.4 by @MacJoom in #42849
• [5.1] upmerge 2024-02-22 by @LadySolveig in #42858
• [4.4] alphabetical sorting string JLIB_FORM_VALIDATE_FIELD_URL_INJECTION_DETECTED by @tecpromotion in #42855
• [5.1] Updating php-cs-fixer and php_codesniffer to latest versions by @Hackwar in #42603
• [5.x] Translation Update by @joomla-translation-bot in #42876
• [4.x] Translation Update by @joomla-translation-bot in #42873
• [5.1] Convert mod_multilangstatus to service provider by @joomlaweby in #42845
• [5.1] Convert mod_sampledata to service provider by @joomlaweby in #42866
• [5.1] Convert mod_frontend to service provider by @joomlaweby in #42853
• [5.1] Convert mod_user to service provider by @joomlaweby in #42852
• [5.1] Rewrite com_associations in vanilla JS by @C-Lodder in #42771
• [4.x] Allow folders with image extensions in media manager by @SniperSister in #42874
• [5.1] Convert mod_toolbar to service provider by @joomlaweby in #42838
• [5.1] Convert mod_loginsupport to service provider by @joomlaweby in #42827
• [5.1] Convert mod_title to service provider by @joomlaweby in #42801
• [5.1] Schemaorg => Generic plugin by @bembelimen in #42699
• [4.4] Fix wrong redirection for saving user account by @joomdonation in #42872
• [5.1] Implement onAfterInitialiseRouter event by @Hackwar in #42692
• Convert mod_stats to service provider by @joomlaweby in #42781
• [5.1] Convert mod_wrapper to service provider by @joomlaweby in #42792
• [5.1] Fix user field validation on change by @C-Lodder in #42756
• [5.1] Fix content history diff error by @C-Lodder in #42755
• [5.1] Rewrite treeselect in vanilla JS by @C-Lodder in #42776
• [5.1] WebAssetManager: reset sorting state when new item enabled or disabled by @Fedik in #42880
• [5.1] Convert mod_version to service provider by @joomlaweby in #42814
• [4.4] JTable::store(true) to update NULLs fails if assets are tracked by @Denitz in #37993
• [5.1] TUF-based core updates by @SniperSister in #42799
• [5.1] Convert mod_stats_admin to service provider by @joomlaweby in #42886
• [5.1] Convert mod_syndicate to service provider by @joomlaweby in #42883
• [5.1] Convert mod_custom to service provider by @joomlaweby in #42877
• [5.1] Use local $container instead of getting from Factory by @joomdonation in #42868
• [5.1] Minor cleanup for modules JS by @C-Lodder in #42784
• Convert mod_messages to service provider by @joomlaweby in #42735
• [5.1] Unit test for WebAsset stuff by @Fedik in #42885
• Change the getItem return type to stdClass and make the CMSObject inherit it by @laoneo in #42717
• [5.0] Improve DX on the com_templates(styles) by @dgrammatiko in #41388
• [5.1] Upmerge 2024-02-27 by @LadySolveig in #42902
• [5.1] Replace deprecated substr() with substring() by @C-Lodder in #42726
• [5.1] Languagefilter: Fix implementation of subscriberinterface by @Hackwar in #42901
• [5.1] Replace JPATH_PLATFORM with _JEXEC by @heelc29 in #42904
• [5.1] Give a name for the breadcrumbs schema.org asset by @Fedik in #42881
• [5.1] Convert mod_feed to service provider by @heelc29 in #42215
• [5.1] Convert mod_tags_similar to service provider by @joomlaweby in #42898
• [5.1] Convert mod_tags_popular to service provider by @joomlaweby in #42899
• [5.1] Fix Form::renderField() can cause duplicate database queries by @Fedik in #42709
• [4.4] Fix Banners application crashes by @joomdonation in #42869
• [5.1] SEF: Implementing trailing slash behavior by @Hackwar in #42702
• [5.1] Adding notice to global configuration for additional options in SEF plugin by @LadySolveig in #42832
• [5.1] Form: Add regex validation rule by @Hackwar in #42657
• [5.1] New Article site by @brianteeman in #39506
• Use a sensible default if none is found by @roland-d in #36692
• [5.1] Upmerge 2024-02-28 by @LadySolveig in #42916
• [5.1] Replace hard coded img element by JLayout joomla.html.image and DRY by @hans2103 in #42508
• [5.1] Unused imports by @Denitz in #41980
• [5.1] Followup convert mod_messages to service provider #42735 by @heelc29 in #42906
• [5.1] SEF: Implementing index.php behavior by @Hackwar in #42704
• [5.1] Convert mod_latestactions to service provider by @joomlaweby in #42910
• [4.4] Fix showon for list field (no multiple) by @heelc29 in #39546
• [4.4] Hide columns in mobile view by @Quy in #42728
• [5.1] Convert mod_languages to service provider by @joomlaweby in #42929
• [5.1] Switching Folder::makeSafe() to framework version by @Hackwar in #42762
• [5.1][Events] PageCache event classes by @Fedik in #41965
• [5.1] Migrating Joomla\CMS\Filesystem\Folder::exists() to is_dir() by @Hackwar in #40131
• [5.1] Switching Folder::files() to framework version by @Hackwar in #42761
• [5.1] Header list field by @Razzo1987 in #42736
• [5][webservices] add filter by search by @alikon in #42519
• [5.x] Drop postcss, own package by @dgrammatiko in #42427
• [5.x] Localize own package by @dgrammatiko in #42428
• [5.1] Menus and categories view with equal headline by @chmst in #38787
• [5.1] Deprecating RouterLegacy class by @Hackwar in #42729
• [5.1] PHPStan: Adding type hints for $this to all backend component layouts by @Hackwar in #42923
• [5.1] Duplicate DispatcherAwareInterface implementation by @Denitz in #41981
• [5.1] Update deleted files list in script.php for 5.1.0-beta1 by @richard67 in #42935
• [4.4] Spelling mistake by @brianteeman in #42940
• [5.1] Remove string JLIB_FORM_VALIDATE_FIELD_URL_INJECTION_DETECTED by @tecpromotion in #42941
• [5.1] Alpha sorting tuf strings by @tecpromotion in #42942
• [5.1] Allow custom fields form be manipulates like category form by @bembelimen in #42510
• [5.1] Pin PHP-TUF package version by @SniperSister in #42943
• [5.1] Add missing import by @Quy in #42947
• [5.1] Fix tooltips in categories by @chmst in #42944
• [5.0]check if the symlink function is available by @brianteeman in #42705
• [5.1] TinyMCE 6.8.3 by @brianteeman in #42930
• Time Zone form field to use groupedlist fancy select layout by @cyrezdev in #42774
• Fix PHPDoc in HtmlDocument by @Denitz in #41532
• [5][cli] Update:extension:check command by @alikon in #42844
• [5.1] webservices plugins use concrete event classes by @heelc29 in #42092
• [5][cli] maintenance database update db structure by @alikon in #42568
• [5.1] Fix SEF redirect while executing parseRule by @Fedik in #42932
• [5.1] Deprecate app/db properties in ActionLogPlugin by @heelc29 in #42090
• [5.1] Updates the dependencies by @laoneo in #42945
• [4.4]Update plg_system_privacyconsent.ini by @brianteeman in #42928
• [5.1] remove joomla accessibility checker by @brianteeman in #42949
• [4.4] Fix articles categories module bug by @joomdonation in #42925
• [4.4] Fix System - Page Cache plugin ignore Exclude URLs parameter by @joomdonation in #42871
• [4.4] Fix cancel frontend module editing redirection by @joomdonation in #42870
• [4.4] com_scheduler - Update ExecutionRulesRule to validate custom cron expression correctly by @n3t in #42863
• "Serialization of 'Closure' is not allowed" fix by @AlexanderCkm in #42819
• [5.1] upmerge 2024-03-04 by @LadySolveig in #42950
• [5.1] Update deleted files list in script.php for 5.1.0-beta1 (2) by @richard67 in #42951
• [4.4] Smart Search, limit the highlight by @Fedik in #42921
• [4.x] Treeselect fixes by @C-Lodder in #42895
• [4.4] Fixing non-SEF URL in feed output by @Hackwar in #42802
• [4.4] Feed: Fixing link selection of AtomParser by @Hackwar in #42706
• [4.4] Smart Search: Properly sort filters by @Hackwar in #42835
• [5.1] Typo plg_system_jooa11y.ini by @brianteeman in #42966
• [5.1] remove deprecated language strings from up-merge #42950 by @heelc29 in #42953
• Fix link hover colors and change color theme CSS files order by @RickR2H in #42794
• Shorten path to global CSS folder by @RickR2H in #42975
• [5.1] replace web-token/signature-pack with web-token/jwt-library by @heelc29 in #42954
• [5.1] Fix SQL error 1242 "Subquery returns more than 1 row" on update when having multiple update sites for the core by @richard67 in #42988
• [5.1] Aliasing Filesystem classes for installation, updating script.php by @Hackwar in #42978
• [5.1] Dark Mode final Version by @coolcat-creations in #42986
• [5.x] Template color scheme configuration by @Fedik in #42221
• [4.4] [BUGFIX] Enforce UTF-8 on CSS Files by @dgrammatiko in #42938
• [5.1] Fix version check in Joomla Update component by @richard67 in #42994
• [5.1] Update TUF client version by @SniperSister in #43004
• [5.1] - Fix JHTTP socket transport http version by @SniperSister in #43002
• [5.1] Fix Send Email button class name by @Quy in #42992
• [5.1] Fix fancy-select for Dark Mode by @LadySolveig in #43008
• [5.1] Dark Mode Web Installer List by @brianteeman in #43017
• [5.1] Dark mode settings block - to template settings by @Kostelano in #43010
• [5][com_installer] add toolbar button 1 click by @alikon in #42985
• [4.x] Fix JHTTP socket transport http version by @SniperSister in #43001
• [5.1] Convert mod_login to service provider by @joomlaweby in #42990
• [5.1] Replace deprecated Factory::getDbo() by $this->getDbo() by @joomdonation in #42977
• [5.1] Core loader custom element rework by @C-Lodder in #42903
• [5.1] Guided tours welcome tour by @obuisard in #41659
• [5] contact error when deleting alias by @alikon in #42968
• [5.1] Form validation: throw error instead of warning by @Hackwar in #42959
• [5.1] update plugin services provider by @heelc29 in #42905
• [5.x] Translation Update by @joomla-translation-bot in #42912
• [5.1] TUF Code Cleanup by @wilsonge in #42900
• [5.1] Upmerge 2024-03-14 by @LadySolveig in #43027
• [5.1] Update deleted files list in script.php for 5.1.0-beta2 by @richard67 in #42955
• [5.1]Installation Language by @brianteeman in #38573
• [5.1] DARK MODE installer drag and drop by @brianteeman in #43018
• [5.1] Revert implementation of AfterInitialiseRouterEvent by @Hackwar in #43009
• [4.4] Drone: Fix artifacts upload for 4.4-dev by @Hackwar in #43033
• [5.1] Drone: Fix artifacts upload for 5.1-dev by @Hackwar in #43034
• [4.4] When duplicating a tour with 0 (no) steps, SQL fails by @obuisard in #43044
• [5.1] spinner support for color schemes by @dgrammatiko in #43023
• [5.1] Guided tours dialog box outline is invisible in dark mode by @obuisard in #43037
• [5.1] Trailing slash: Don't redirect for homepage by @Hackwar in #43063
• [5.1] Guided Tours Welcome Text Update Step 1 by @coolcat-creations in #43061
• [5.1] Database installation Fields by @brianteeman in #43054
• [5.1] Convert mod_post_installation_messages to service provider by @joomlaweby in #42987
• [5.1] Update TourTable.php to allow save on tours by @obuisard in #43031
• [5.1] Dialog: aria-label for Close button is not translated by @brianteeman in #43058
• [5.1] Tour primary button changes size on hover, adding annoying flicker by @obuisard in #43038
• [5] MFA fixed code by @alikon in #42804
• [5.1] Explicit return false when no form field was found by @laoneo in #43006
• [5.1] Typehint false for getItem by @laoneo in #42972
• [4.4] Cassiopeia back to top by @brianteeman in #43057
• [5.1] Update deleted files list in script.php for 5.1.0-beta2 (2) by @richard67 in #43045
• [5.1][com_users] fix batch-copy-move by @alikon in #43050
• [5.1] Trailing Slash: Don't remove slash when it's the only path char by @Hackwar in #43074
• [5.1] Missing checkbox/radio and select types constants in array by @obuisard in #43064
• [5.1] Let Table extend stdClass by @laoneo in #43021
• [5.1] Minor cleanup for component JS by @C-Lodder in #42778
• [5.1] SEF: Don't redirect for documents other than HTML by @Hackwar in #43083
• [5.1] Upmerge 2024-03-18 by @LadySolveig in #43086
• [5.1] Alert links system container [a11y] by @brianteeman in #42995
• [5.1] The item can be null in FieldsHelper by @laoneo in #43007
• [5.1] Updates the dependencies by @LadySolveig in #43090
• [5.1] Update deleted files list in script.php for 5.1.0-rc1 by @richard67 in #43095
• [4.x] Update punycode library to include security fix by @SniperSister in #43092
• CMSObject should extend stdClass by @laoneo in #43020
• [5.1] Alert links system container by @LadySolveig in #43102
• [4.x] Add support for brotli by @Razzo1987 in #43055
• [5.1] fix alpha sorting in PR 42221 by @tecpromotion in #43111
• Allow to use filter.state for delete button in ListView by @HLeithner in #38797
• [5.1] add missing Header in guidedtours.joomla_welcome by @tecpromotion in #43115
• [5.1] Guided Tours button by @brianteeman in #43120
• Add missing variable to light theme by @coolcat-creations in #43117
• [5.x] Translation Update by @joomla-translation-bot in #43107
• [5.1] Move buttons in Extension Manager to dropdown by @bembelimen in #43146
• [5.1]Add focus to treeselect [a11y] by @brianteeman in #43125
• [4.4] User profile edit: No notice when no active menu item by @Hackwar in #43140
• [5.1] Dark Mode menu select toggle colour by @brianteeman in #43160
• [5.1] pixel shift from dark to light by @brianteeman in #43138
• [5.1] GuidedTours: No error when joomla-welcome is missing by @Hackwar in #43139
• [5.1] Alpha sorting strings in plg_system_jooa11y.ini by @tecpromotion in #43122
• [5.1] menu icon js fix [a11y] by @brianteeman in #43116
• [5.1] Finder: Allow finder plugins to output spaces by @Hackwar in #43093
• [5.1] Fix error in media field, add missing dependency in media-select field by @Fedik in #43080
• [5.1] Add exceptions to deleted files check for JS files to be kept on update by @richard67 in #42936
• [5][plugin] emailcloack Deprecated: mb_strpos() by @alikon in #42865
• Guided tours welcome performance by @obuisard in #43166
• [5.x] Translation Update by @joomla-translation-bot in #43156
• [5.1] phan: fixes plugins by @heelc29 in #43073
• [5.1] Merge update parameter and improve contrain checker by @bembelimen in #43147
• [5.1] media punycode folder by @brianteeman in #43162
• [5.1] Change item type to stdClass by @laoneo in #42960
• 5.1/upmerges/2024 03 28 by @LadySolveig in #43172
• [4.4] add PHP8.3 to PhpVersionCheck quickicon by @heelc29 in #43145
• [4.4] Postinstallation-Message htaccess.txt brotli change by @MacJoom in #43173
• [5.1] Upmerges- 2 2024-03-28 by @LadySolveig in #43177
• [5.1] Update deleted files list in script.php for 5.1.0-rc1 (2) by @richard67 in #43168
• [5.1] Fix SQL syntax error when updating to 5.1 on PostgreSQL by @richard67 in #43175
• [5.1] brotli compression by @brianteeman in #43171
• [5.1] Fix SQL error 1242 "Subquery returns more than 1 row" on update when having multiple update sites for the core (2) by @richard67 in #43169
• [5.1] Senseless proxy methods by @Denitz in #41967
• [5.1] Cog icon focus [a11y] by @brianteeman in #43135
• [5.1] tinymce hardening fix by @brianteeman in #43176
• [5.1] Delete 4.4.4-2024-03-28.sql update SQL scripts and update deleted files list in script.php by @richard67 in #43187
• [5.x] Translation Update by @joomla-translation-bot in #43186
• [5.1] Fix duplicate Brotli .htaccess postinstall message after update from 4.4 by @richard67 in #43182
• [5.1] Use update channel the correct way by @bembelimen in #43190

Full Changelog: 5.0.3...5.1.0-rc1