MediaWiki 1.21/Roadmap/status

Last update on: 2012-12-monthly

2012-10-10
1.21wmf1 deployed to all WMF wikis

2012-10-18
We've deployed 1.21wmf2 to the test wikis, mediawiki.org, and the Phase I sites except for Meta and Commons. We'll deploy 1.21wmf2 to Meta and Commons on Monday, October 22nd as part of the English Wikipedia deployment window.

(Phase I deployment was delayed due to a parser cache issue.)

2012-10-20
We've deployed MediaWiki 1.21wmf2 to all the Phase I wikis, and will deploy to English Wikipedia on Monday, October 22nd.

2012-10-24
1.21wmf2 deployed to all WMF wikis

2012-10-26
We've deployed MediaWiki 1.21wmf2 to all wikis. This branch contained the ContentHandler code necessary for supporting Wikidata, as well as high-resolution image support, some refactoring of the CologneBlue skin, and a new "Sites" backend (also used by Wikidata). Deployment of MediaWiki 1.21wmf3 begins Monday, October 29 and will continue through Wednesday, November 7.

2012-10-monthly
We started the MediaWiki 1.21 series this month. We deployed MediaWiki 1.21wmf1 and 1.21wmf2 to all wikis, and started to deploy 1.21wmf3. 1.21wmf2 contained a number of significant features: ContentHandler code necessary for supporting Wikidata, high-resolution image support, some refactoring of the CologneBlue skin, and a new "Sites" back-end (also used by Wikidata).

2012-11-07
1.21wmf3 deployed to all WMF wikis

2012-11-21
1.21wmf4 deployed to all WMF wikis

2012-11-28
<section begin="2012-11-28"/>We rolled out 1.21wmf5 to the non-Wikipedia sites today, after a brief reversion and re-deployment to fix breakage in how we were displaying some styling (details). We are on track to deploy 1.21wmf5 to English Wikipedia on Monday, December 3.<section end="2012-11-28"/>

2012-11-30
<section begin="2012-11-30"/>On Friday, 30 November, we will probably revert the most recent changes in LabeledSectionTransclusion, because of performance issues we discovered this week. This will affect all non-Wikipedia sites and may affect how templates and transclusions are displayed; if you changed pages to accommodate the LabeledSectionTransclusion changes, you may want to undo those changes on Friday. We are on track to deploy 1.21wmf5 to English Wikipedia on Monday, 3 December.<section end="2012-11-30"/>

2012-11-monthly
<section begin="2012-11-monthly"/>Wikimedia engineers deployed 1.21wmf3 and 1.21wmf4 to all Wikimedia sites, and began deploying 1.21wmf5 (with a momentary breakage). These updates included many significant improvements, including one-click (AJAX) patrolling, for both new page and diff patrol, and a Template Sandbox, which lets users preview changes to a template by previewing an example page where it's used. <section end="2012-11-monthly"/>

2012-12-monthly
<section begin="2012-12-monthly"/>We continued the bi-weekly cycle, deploying 1.21wmf5 and 1.21wmf6. We stopped deployments at the end of the month due to the holidays, restarting the 1.21wmf7 cycle on January 2.<section end="2012-12-monthly"/>