The Timeless skin has been deployed to test, test2, and mw.org. Anyone interested, please go ahead an enable it and find everything wrong and swear at me about it.
Note that the current design is not the final design and I haven't quite worked out what the final design should be, either, so feel free to swear at me about that, too, if you have any ideas/whatever.
* Bad documentation: https://www.mediawiki.org/wiki/Skin:Timeless * Bugs: https://phabricator.wikimedia.org/tag/timeless/ * To enable it: https://www.mediawiki.org/wiki/Special:Preferences#mw-prefsection-rendering
If all goes well, we will move on to deploy it to the pilot wikis, as listed on the deployment task, sometime next week: https://phabricator.wikimedia.org/T154371
A huge thank you to all the insane people who have worked to get us to this point, when the entire notion of a new skin seemed something of an impossibility most of the way through.
-I