Hi all–

Codex v2.0.0-rc.2 will ride the train to production this week. There should be very little in the way of noticeable changes compared to RC1.

This is the second (and hopefully final) release candidate for the 2.0 release of Codex, the design system for Wikimedia. The new release introduces a new line-height token which should make it simplify the process of enabling the new “font modes” feature in the skins at some point in the near future. A full list of changes can be found at in the library changelog. 

Any bugs noticed during the rollout of RC2 can be reported here: https://phabricator.wikimedia.org/T394833

Thanks,

Eric Gardner & the Design System Team


On May 7, 2025, at 1:30 PM, Volker E. <volker.e@wikimedia.org> wrote:

Hi all,
we can happily report, that Codex v2.0.0-rc.1 has been successfully
released and rolled out with MediaWiki v1.45.0-wmf.1 train this
Tuesday to be ready for testing on
https://en.wikipedia.beta.wmflabs.org/

We would like to repeat that you test your extensions and Codex design
tokens, icons or components using interface specifically with Vector
client preferences font scaling.
Additionally we would like to ask if there are findings and tasks to
be filed, to reference them to testing this release on beta
https://phabricator.wikimedia.org/T392379

Thanks,
Volker E. on behalf of the Design System Team


On Mon, Apr 28, 2025 at 2:12 PM <atomasevich@wikimedia.org> wrote:

This is a reminder of the upcoming Codex v2.0.0-rc.1 release scheduled for 29 April 2025, which will ride the train the week of 5 May 2025. This first release candidate will include all known breaking changes. Assuming no major issues are discovered, v2.0.0 will be released on 13 May 2025 and ride the train the week of 19 May 2025.

==== Breaking Changes ====

Developers using Codex are encouraged to check for breaking changes documented at https://www.mediawiki.org/wiki/Codex/Release_Timeline/2.0#Breaking_changes to avoid compatibility issues. Phabricator tasks have already been filed for known areas that need to be updated based on codesearch but this may not be comprehensive.

==== Visual Changes ====

With the exception of some interfaces in MonoBook detailed at https://www.mediawiki.org/wiki/Codex/Release_Timeline/2.0#Visual_changes, readers and editors should not experience any major visual changes as part of this release.

Codex components and interfaces that use Codex design tokens may look slightly different but any changes should be either negligible or improvements. Some potentially noticeable visual changes include:
- Dialog titles have increased in size.
- Spacing between Checkboxes and Radios within groups has been reduced.
- Padding in block-style Messages has been reduced.

The changes to the typography scale will be visible to readers only once Codex font modes are incorporated into the text preferences feature of Vector 2022 (tracked in T391891) and other skins, which will happen at a later time. This change will make interfaces built with Codex appear even more consistent, especially across skins (and text size options in Vector 2022).

A complete picture of the testing effort prior to release is documented in T386298. Issues discovered in beta during testing post-release will be tracked in T392379 and issues discovered as part of the train deployment will be tracked in T392390.

Thank you for your attention,

Anne Tomasevich, on behalf of the Design System Team
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