I apologize for not having sent these emails in a while. I'll send catch-up ones for wmf15 through wmf18 later today. But first, today's branch: wmf19.

Over the next few days, wmf19 will be deployed to WMF wikis. The highlights of what's new in wmf19 are:

- You can now expand the single topic view https://phabricator.wikimedia.org/T103584 to full width in Flow. - In Flow, posting a new topic, posting a new reply and editing a board's description now use the new, rewritten editor system https://gerrit.wikimedia.org/r/#/c/220665/. This should only cause minor changes in appearance and behavior, but there may be bugs. Editing existing topics and replies, and editing summaries, still use the old editor system; they will be migrated to the new system later. Nice features of the new system include: - When switching from wikitext to VisualEditor https://phabricator.wikimedia.org/T101189 or vice versa https://phabricator.wikimedia.org/T97290, the editor no longer loses focus. - You can cancel out of the editor by pressing Escape https://phabricator.wikimedia.org/T101178. - If you click Cancel (or press Escape), then open the editor again, the text you wrote will still be there. - We fixed https://gerrit.wikimedia.org/r/#/c/231727/ a regression introduced in wmf14 https://gerrit.wikimedia.org/r/#/c/221272/ that caused new Flow topics not to appear in the watchlist https://phabricator.wikimedia.org/T108396. - Translations for the Topic namespace were added for Vietnamese (vi), Central Kurdish (ckb), Northern Luri (lrc), Mazandarani (mzn) and South Azerbaijani (azb), and the translation for Persian (fa) was corrected.

wmf19 is being rolled out according to the standard deployment schedule:

- Tuesday 11am-1pm PDT (6-8 hours ago): 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 (16-18 hours from now): 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: 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