Over the next few days, 1.26wmf21 will be deployed to WMF wikis. The highlights of what's new in wmf21 are:
- To prevent abuse, edits that mentioned more than 20 users would not cause Echo notifications to be sent. This limit has been increased https://phabricator.wikimedia.org/T110306 to 50. - Writing new posts in Flow using the mobile site was completely broken https://phabricator.wikimedia.org/T110485; this regression was introduced in wmf19 and is fixed in wmf21. - Links to pages whose name contains './' (dot slash) were broken https://phabricator.wikimedia.org/T110676. The fix for this bug was deployed immediately, outside of the weekly schedule, because of how common these types of pages are on the Hebrew Wikipedia. - Removing a category from a Flow board description now actually decategorizes it https://phabricator.wikimedia.org/T94569. Similarly, removing a link or template now actually removes the board from the Whatlinkshere list for that page or template. This will prevent new "phantom" entries (entries that should have been removed but weren't) from appearing in categories and Whatlinkshere, but existing phantom entries won't be removed until we run a script to rebuild these lists https://phabricator.wikimedia.org/T110326 later this week or some time next week. - Links from Flow topics to special pages are no longer listed https://phabricator.wikimedia.org/T109814 in Whatlnkshere. As above, this will prevent new bad entries from being added, but existing ones will only be removed when we run the rebuild script. - The "expand the single topic view https://phabricator.wikimedia.org/T103584" feature introduced in wmf19 did not display correctly https://phabricator.wikimedia.org/T110488 in right-to-left languages. This is fixed in wmf21.
wmf21 is being rolled out according to the standard deployment schedule:
- Tuesday 11am-1pm PDT (yesterday): deployment to test wikis ("group 0"); for Flow, these are testwiki https://test.wikipedia.org/, test2wiki https://test2.wikipedia.org/ and mediawiki.org https://www.mediawiki.org/ - Wednesday 11am-1pm PDT (~8 hours ago): deployment to non-Wikipedia wikis ("group 1"); for Flow, these are meta https://meta.wikimedia.org/, officewiki https://office.wikimedia.org/ and wikidata https://www.wikidata.org/ - Thursday 11am-1pm PDT (~16 hours from now): deployment to Wikipedias ("group 2"); for Flow, these are the English https://en.wikipedia.org/, French https://fr.wikipedia.org/, Hebrew https://he.wikipedia.org/, Portugese https://pt.wikipedia.org/, Catalan https://ca.wikipedia.org/, Telugu https://te.wikipedia.org/, Russian https://ru.wikipedia.org/, Punjabi https://pa.wikipedia.org/ and Chinese https://zh.wikipedia.org/ Wikipedias