Reading/Web/Release timeline

This page attempts to track notable changes that impact the reading web experience in production. For older years, these appear empty purely because we never documented our work back then. Feel free to jump in and do so, every data point helps! These will usually have an associated SWAT deploy due to the fact that the reading web team makes heavy use of feature flags.

🎂 is used to mark releases the team feels are worth celebrating and usually mark the end of a long line of work.

Dates should reflect a date the change went into production for all wikis (unless a specific wiki is stated).

See also:
 * Reading/Web/Notable_incidents
 * Reading/Web/Release timeline/Visual Changes
 * Growth/Release Timeline

September
21st

Table of contents now persists for anonymous users T316060

5th

Completed Minerva Codex migration T343920, T344006

August
22nd

Migrated Vector's limited width to new client preference API T341641

15th

Created new core API for client side preference manipulation T341720

8th

Deploy Vector 2022 as the default desktop skin to several Wikipedias (zh, et, zh-yue, zh-min-nan, wuu, zh-classical, mg, xmf, ang, lad, nah, hak, cdo, gan, mdf) T335886

MobileFrontend migrated to Codex components T340262

1st

Introduced mw.util.addPortlet API T303488

July
25th

Turned off Vector Zebra A/B test for multiple wikis T337956

18th

Completed IP masking migration T339994, T340789 T319260, T339379, phab:T330510

20th
Turned off Vector Zebra A/B test for enwiki and additional languages T337956

9th

Changes to MobileWebUIClickTracking keys for main menu. Schema is not currently used but noting as notable, in case we need to refer to this data in future. T321746

1st

Removed popup indicator on page load T336197

May
8th

Fixed width indicator deployed to English Wikipedia T335307

4th

Deployed Vector 2022 as the default skin to Spanish Wikipedia T335686

31st

Turned on Vector Zebra A/B test for enwiki and additional languages T335972

April
27th

Performance improvement to mobile for lower end devices T241139. Work likely resulted in a ~50% reduction in JavaScript execution time for the task on long pages like the "Barack_Obama" page which represents around ~260ms improvement in Total Blocking Time on the Moto G (5) phone.

3rd

PT wikinews makes AMC mode the default on mobile T290812

Polish Wikipedia becomes first wiki to separate Vector and Vector 2022 styles/scripts. T332809

March
27th

Enabled reading list on mediawiki.org and meta.wiki T322093

22nd

Page tools live for anons T331657

20th

Language links are now included in the page on mobile. T331905

February
27th Stop fragmenting ParserCache entries for mobile frontend T326147

14th

Page tools live for all logged in users T328692

9th

Login button moved outside dropdown (T289212)

All ResourceLoader modules now target the mobile site by default. (T127268)

2nd

🎂 Fixed width persistence enabled on all wikis for anonymous users. (T327979)

1st

Fixed width persistence enabled on group 1 wikis for anonymous users. (T327979)

January
31st

Fixed width persistence enabled on group 0 wikis for anonymous users. (T327979)

18th

🎂 🎂 🎂 Deployed the new Vector 2022 skin to English Wikipedia. (T326892)

November
15-17th

Via train - enables the visual enhancements next feature flag which adds the max width toggle and reduces icon sizes to 32x32 (T320101)

October
27th

Max width toggle preference completed (T319447)

September
27th

Nearby code was dropped from MobileFrontend (T246494)

22nd

RFC goes live on English Wikipedia

20th

Extension:Nearby is deployed everywhere (T246493)

12th

Extension:Nearby is deployed on French and Hebrew wikis (T246493)

7th

Extension:Nearby is deployed on Wikidata (T246493)

1st

Disabled sticky header experiment for viwiki and idwiki (T315264)

August
18th

Display locking on mobile (now possible to find in page within collapsed sections (T216789)

Ran desktop improvements survey on English Wikipedia (T314286)

16th

Enabled sticky header experiment for viwiki and idwiki (T312295)

8th

Disabled sticky header edit A/B test (T312296)

4th

Now possible to collapse table of contents in Vector 2022 (T307901)

July
26th-28th

Codex Typeahead search and QuickSurveys deployed via train T303558 T310241

19th-21st

Grid deployment to all wikis T312241

18th

Sidebar now collapsed by default in new Vector T287609

6th

Enable sticky header A/B test (T311144)

June
30th

New toolbar order deployed everywhere except desktop improvements group 2 wikis T310054

28th

New toolbar order deployed on group 0 and group 1 wikis T310054

23rd

cawiki, plwikisource, arwikisource added to desktop improvements T307903

16th

Table of contents A/B test was disabled T309683

10th

Gradients have been removed from Vector namespace tabs T310197

May
23rd [Vector 2022] A/B test enabled to French and Portuguese T306607

17th [Vector 2022] A/B test enabled to all pilot wikis except French and Portuguese T306607

April
26th [Vector 2022] Table of contents enabled on all non-pilot wikis T306608

1st [Vector 2022] Skin migration completed T301930

March
24th Modern Apps API no longer use MobileView API for rendering language variants T236733

22nd

[Vector 2022] Ran the skin migration database scripts T299104

February
22nd Table of contents is now enabled on the beta cluster.

7th The mobile version of the Special:Contributions page is now the same as desktop as of this week's train deployment. T293268

3rd [Vector 2022 skin] mw.config.get('skin') now returns 'vector-2022' for Vector skin. T299927

2nd [Vector 2022 skin] Enabled on group 2 wikis. T299927

1st [Vector 2022 skin] Enabled on group 1 wikis. See also Reading/Web/Notable_incidents T299927

January
31st
 * Indonesia Wikipedia added to pilot wikis (T299676).
 * A/B test for sticky header is turned off (T297924).
 * Sticky header is deployed everywhere for logged in users (T297924).

19th

Enabled desktop improvements on arywiki, frwikiquote, ptwikinews, plwikinews, viwiki, viwikibooks, MediaWiki, Foundation-wiki, Collab-wiki, Strategy-wiki, thwiki ( T298519).

5th A/B test for sticky header is launched (T295976). 50% of users should see the sticky header.

December
16th Language moved to top of main page on eu.wikipedia.org T293470

13th

Deployed sticky header to office wiki and test wiki with generic A/B test scheam T295972

9th Sticky header enabled on office and test wiki T295972

7th

Minerva skin PHP code is now consistent with Vector T266072

1st

Instrumentation: scroll to top added T292586

November
23rd Instrumentation: ReadingDepth restored. T294777

15th Talk enabled for anons on English Wikipedia T293946

October
28th Desktop Click tracking schema now oversamples for logged in users T292588

18th Closed out epic relating to various accessibility improvements. T287097

September
30th

Sticky header enabled on beta cluster. https://phabricator.wikimedia.org/T289721

16th

Completed various Page previews visual bugs (https://phabricator.wikimedia.org/T284095)

August
5th

Removed redundant CSS from legacy skins Monobook, CologneBlue and Modern, reducing render blocking CSS by approx 1.5kb (T278896)

10th

User links to deployed to all wikis (T288274)

12th

Deprecated longstanding legacy CSS, improving performance, and maintainability of all skins (T287410)

July
20th

A/B test for languages feature disabled, enabling the feature for all users. (T286459)

26th

Standardized icons across mobile and desktop experience improving design consistency (T191021).

27th

New user links feature is enabled on office wiki and test wiki. (T287391)

28th

Modern skin hidden in user preferences to new users. (T287616)

Desktop version of Special:Contributions becomes default on mobile for Wikidata.org and Commons (T283988)

29th

Removed redundant CSS from Modern Vector experience, reducing render blocking CSS by approx 1.5kb (T278896)

June
2nd

New User links feature is now on the beta cluster.

22nd

Language button is enabled for anons on all of the test wikis except Farsi. Language button A/B test begins for logged in users. (T269093)

30th

QuickSurveys ported to Vue.js (T282473)

May
5th

Language button shipped to all logged in users who have opted into the new experience. (T280526)

April
27th

Language button shipped to office wiki and test wiki (all users)

AMC mode on mobile now features move, protect and delete actions for privileged users.

March
1st Twitter previews now work, logos are updated for wikivoyage in preparation for roll out for desktop refresh, Vue search A/B test deployed (stage 2)

4th vue search a/b test is live (T249297)

10th Error logging for Vue.js is live T249826 following hiccup in T277094

31st Vue.js search live on all wikis using new Vector. T276917

February
11th wvui 0.1.0 (Vue library) is released to MediaWiki core T271353 after security review. The new Vue based search is enabled on the Wikimedia beta cluster T259798

January
25th JavaScript error logging is now live on English Wikipedia T255585

21st Max-width is reduced to 500px. (T264218)

October
8th

A technical change enabled by desktop improvements simplifies the Modern skin so that it much easier to maintain (T259401)

September
30th

Deployed the new location of the search bar to new vector and begin A/B test on test wikis

16th

An error surfaced by the client side error logging blocks the train (T263047) - a significant milestone as this has never happened before.

August
28th

Lead paragraph transform now applies to images as well as infoboxes.

19th

SEO impact: Enable $wgMFNoindexPages for all wikis

18th

Technical debt payoff: PHP InlineDifferenceEngine removed

5th

Desktop improvements default for French Wikipedia

July
28th

Sidebar instrumentation enabled on Vector

Desktop improvements default for Persian Wikipedia and Hebrew Wikipedia

22nd

Desktop improvements default for Basque Wikipedia, French Wiktionary, and Portuguese Wikiversity

21st

New version of Vector skin deployed as a user preference to all projects (T254228)

13th

First NPM development release of WVUI.

June
29th

Skins: Deprecation of various hooks and introducing SkinMustache

4th

Collapsible sidebar now on office wiki

May
11th

New Vector on office wiki (new header, Latest-mode opt-out)

April
9th

MediaWiki:MobileMainPage has been removed from Hindi and Russian wiki. T243996

1st

Kick off Vue.js discussions in earnest

March
16th

Vector is type checked without exception

February
12th

Ordered list styles are translated on Minerva https://phabricator.wikimedia.org/T217616

January
9th

the mobile main menu now works without JS (more responsive) T225213

Lead paragraph transform available in other namespaces (T211063)

Mobile site now uses diff engine and PHP in core. (T117279)

December
19th

Article and talk tabs, history button, and improved user pages now available to all logged-in users on mobile

5th

Talk pages no longer render as a modal via JS (Date may not be accurate, delayed because of thanksgiving)

3rd

The first of many Web changes to Vector are deployed.

October
24th

Main watchstar for Minerva uses core code (T234970).

17th

The mobile treatment of Echo now lives in the Echo extension T221007 and is live on English Wikipedia.

10th

The main menu is now being server side rendered as well as client side rendered (T234650)

September
17th

Icon refactor deployed after a couple of weeks working on several bugs & regressions. T229440

August
28th

AMC outreach drawer deployed T231206.

20th

Cologne Blue hidden in Special:Preferences to users who are not using it T223824

7th

🎂AMC deployed to all Wikipedias (228916)

July
30th

AMC user menu deployed.

June
5th

Deployed AMC history special page to Arabic, Indonesian, and Spanish Wikipedias (T224970)

19th

Deployed AMC to Persian, Italian, Thai, and Japanese Wikipedias (T225123)

May
1st

Removed Hogan from MobileFrontend. Mobile site now uses Mustache (standard template library of core). 

2nd

Deployed AMC main menu to Arabic, Indonesian, and Spanish Wikipedias (T216152)

31st

Deployed AMC overflow menu to Arabic, Indonesian, and Spanish Wikipedias (T223883)

April
30th

SEO A/B test concludes. Rollout to 100% of main namespace pages on all wikis. T209377

9th

History form is collapsible [wmf/1.34.0-wmf.1]

March
28th

History page is now an OOUI form [1.33.0-wmf.24]

20th

AMC now deployed to eswiki, arwiki, idwiki: T217643

7th

AMC is now live on the beta cluster!

14th

QuickSurveys now supports targeting based on edit count, country and whether user is logged in or anon

15th

iOS scroll hacks disabled on mobile

18th

Thanks actions (and other log accounts) can now be tagged. Will now be tagged with mobile/AMC.

February
8th

MobileFrontend now supports ECMAScript 6 for code development (doesn't run in production).

25th


 * First Humans of the Web (Readers Web, Editing, and Growth teams) gathering

26th


 * Talk and language overlays now open without a delay (T215370, T215657)
 * WebClientErrors updated to distinguish logged in bugs VS anonymous bugs.
 * CentralNotice banners are now inlined under the Minerva header

January
🎂22nd

Page issues deployed to English Wikipedia

27th

✋ All Hands from 27th January until 2nd February — event outline, conference schedule. No releases.

31st

All JavaScript in MobileFrontend is now bundled with Webpack.

December
18th

Page issues deployed to all wikipedias except enwiki. T210553

November
19th

Staged rollout of SEO A/B A/B test concluded at 100%. T208755

14th

Staged rollout of SEO A/B A/B test started at 1%. T208755

October
1st

Page issues A/B test enabled for 5% and then 20 minutes later 20% of users on Japanese, Farsi, Russian and English Wikipedia. T200792

3rd

setup beta cluster dashboard for monitoring events in beta cluster. This allows us to identify problems early before they hit production. T202026

17th

client side error reporting for mobile added to production T206702

🎂18th


 * After a big investment, we now have a new graph shows JavaScript errors in the mobile site across all Wikipedia's. At time of writing number of errors peaked at 3.9k a minute. Every minute 3,900 users experience an error and we have no idea why. We need Sentry!
 * [Proton] RESTBase mirroring 100% of all production traffic to Proton (T186748#4677976)

September
27th

English Wikivoyage now has page previews. T203981

26th

ReadingDepth was adjusted (1.32.0-wmf.23) to allow A/B tests to explicitly enable the schema where it was not previously possible. (T204144)

25th

The sampling rate for ReadingDepth was bumped from 0.1 to 10% (T205176)

19th

Page issues A/B test is enabled on Latvian Wikipedia (T204609)

18th

[Proton] RESTBase mirroring 25% of all production traffic to Proton (T186748#4595101)

6th


 * MobileFrontend using Webpack to build some of its JavaScript. Plans to broaden this to other files (T199452)
 * Client side error logging via EventLogging is now available on all wikis (but disabled) T202026

August
21st

There is now a standardised way of obtaining a page token across our EventLogging schemas. This should help us link activity across schemas T201124

24th

Mobile diffs now show moved paragraphs

30th

Bug fix: Restored action=init events to Schema:Edit from mobile [phab:T202786]]

July
12th (TBC) Page previews now do not display wide margin between text and image - T192928

May
10th Desktop: mw-collapsible now doesn't cause flash of unstyled content. Messages can now be passed as LESS variables T42812

April
3rd VirtualPageviews enabled for all wikis for page preview viewing logging. T189906

4th DNT header now ignored in page preview view tracking T4052896

11th Page previews to 100% of users on German Wikipedia [[phab:T191966]

12th Page previews to 10% of users on English Wikipedia

17th Page previews rolled out to enwiki. We deployed to 25%, 37.5% then 100% of users over the course of a morning. (T191101)🎂

March
1st

Deployed html previews to all wikipedias. 6th
 * Bug fix: broken thumbnail issue in page previews
 * Bug fix: Page previews text and formulas cut off on arwiki

Bug fix: Removing parentheses breaks chemical formulas

20th: Disambiguation popups

26th: Hindi mobile campaign goes live

February
5th

Enabled a new mobile logo for Pashto Wikipedia.

6th

Bug fix: Download PDF button now limited to versions of Android that support PDFs (https://phabricator.wikimedia.org/T182059)

New settings page code merged to master

13th-15th

New settings page; fontchanger and expand all sections released to production (covers https://phabricator.wikimedia.org/T67079 too).

20th disabled settings link on Special:MobileOptions due to persistent vandalism by anonymous users. Several years ago we had a contact form with similar problems. Lesson relearned: asking for anonymous feedback on mobile usually leads to vandalism.

22nd

Enabled HTML previews on cswiki.

January
8th

Language icon disabled on Wikidata and MediaWiki.

11th

MobileFormatter refactored. Infoboxes wrapped in mw-stack element will now be swapped with lead paragraph on mobile

17th

SWATed some fixes to new lead paragraph logic (changed last week to consider div.mw-stack elements)

December
11th
 * Turned on EventLogging for Page Previews

November
15th
 * Deploy print to PDF button for Chrome on Android
 * Turned off EventLogging for Page previews

October
9th

Enabled print styles on Vector on test wiki

10th

Disabled OCG

11th

Enabled new Vector print styles on all wikis

18th

Restarted Page Previews A/B test on enwiki and dewiki

September
7th

Disable Wikidata descriptions on all wikipedias.

18th

Stopped page previews A/B test on enwiki and dewiki.

25th

Disabled RelatedArticles instrumentation

August
16th

Page previews launched on all wikis except en and de

28th

Launched Popups A/B test on enwiki and dewiki

July
11th

Firefox event logging duplicate event bug fixed

17th

Minerva separated from MobileFrontend in production

19th

Stopped RelatedArticles A/B test

June
2nd

Electron rolled out to all projects

7th

A/B test launched on RelatedArticles

14th

Cards removed from cluster

May
2nd

🎂 Related pages enabled for everyone

Print styles enabled for Minerva

3rd

Wikivoyage switches to new version of RelatedArticles

24th

🎂 First paragraph moved before infobox on all projects

April
3rd

Wikidata descriptions disabled in English Wikipedia

4th

ES3 JavaScript support dropped

5th

Page previews enabled on Hungarian and Hebrew Wikipedia

13th

Related pages enabled on Haitan wikipedia (desktop)

20th

Non-JavaScript users can edit mobile site

March
20th

Page images restricted to lead section

29th

🎂 New header rolled out to mobile web

February
2nd

RelatedArticles shown to 90% of users

14th

Merged Popups frontend rewrite into master

21st

Reading depth schema deployed

23rd

New mobile header rolled out to cawiki and itwiki

January
19th

🎂 Wikidata descriptions shown on English Wikipedia

December
5th

Wikidata descriptions enabled on French and German Wikipedia

RelatedArticles enabled on Japanese and Spanish Wikipedia

November
8th

Began rewrite of Page previews codebase

October
3rd

Wikidata descriptions on Japanese and Spanish wikis

RelatedArticles enabled on mobile for all but 6 wikis

🎂 New footer pushed to mobile

11th

Disable bottom language button in Minerva

August
4th

🎂 New language switcher launched to all wikis

17th

🎂 Lazy loaded images enabled on mobile

30th

Enable wikidata descriptions on all but 6 wikis

Lazy loaded references experiments ended

July
5th

Lazy loaded images on Japanese wikipedia

12th

Lazy loaded images and references on Thai Wiki

18th

Lazy loaded images and references on Russian Wiki

June
6th

Enable page previews A/B test for 50% of users on Hungarian Wikipedia

14th

Lazy loaded images on Ukrainian and Farsi Wikipedia's

30th

Lazy loaded images on Tagalog Wikipedia

May
9th

Lazy loaded images on Bengali Wikipedia

April
26th

Lazy loaded references enabled in beta.

20th

RFC for page previews posted

February
17th

New language overlay shown to 10% of users

21st

Gather disabled by RFC T127509

April
2

Gather deployed T91341

October
Anonymous editing A/B test on Italian Wikipedia for mobile (https://meta.wikimedia.org/wiki/Research:Anonymous_mobile_editing_in_Italian_Wikipedia) leads to anonymous editing everywhere.

August
28th

Mobile uploads disabled on mobile web after vote.

June
17th

Tablets redirected to mobile site (data)

2013
For 2013 - the historical Extension:MobileFrontend/Deployments may also be useful.

August
27th


 * enabled showing edit button in article sections (not just at the top of the page) + CTA for logged out users
 * released Echo notifications to projects where Echo was enabled (en, hu, pl, pt, sv, ru)

July
23

Mobile editor launched, showed login CTA from upload & edit buttons to logged out users

30

disabled login CTA from upload button

March
28th

Mobile uploads went live

April
4th

enabled uploads and login CTA from upload button in articles

11th

disabled login CTA from upload button in articles (ending the selfiepocalypse)

2012
For 2012 - the historical Extension:MobileFrontend/Deployments may be useful.

October
Mobile beta introduced

June
First version of mobile (Ruby gateway)