Deployment timing
This deployment is tentatively scheduled for Wednesday, 25 August.

The deployment date will be finalized on Tuesday, 24 August once we've confirmed wikis have not raised any concerns with the plan @Whatamidoing-WMF communicated in T288704#7298872.

Change 714720 had a related patch set uploaded (by Bartosz Dziewoński; author: Bartosz Dziewoński):

[operations/mediawiki-config@master] Enable topic subscriptions as a beta feature on Wikipedias except enwiki

https://gerrit.wikimedia.org/r/714720

Note that there are a few wikis that you wouldn't think are Wikipedias, but which are treated as if they were. See my comment from last year when we did the same thing for the reply tool:

In T266303#6598594, @matmarex wrote:

The proposed config patch uses the 'wikipedia' dblist, which has a few consequences:

• Newly created Wikipedias will also automatically get DiscussionTools as a beta feature. It also includes a few Wikipedias that were created after the spreadsheet in the task, and which are not listed there, e.g. smnwiki.

• A few non-Wikipedia sites are included, because they're in that dblist for some reason, e.g. arbcom_enwiki, tenwiki, wg_enwiki. They are mostly private or closed so this shouldn't affect anyone negatively. (I was actually surprised to learn about this.)

In Special:Preferences#mw-prefsection-betafeatures: the Discussion tools beta feature should contain a list item that reads: Receive notifications when new comments are added in sections you have subscribed to.

I will note that the beta description doesn't change based on enabled features, so this isn't really something to spell out / test. 😅

Change 714720 merged by jenkins-bot:

[operations/mediawiki-config@master] Enable topic subscriptions as a beta feature on Wikipedias except enwiki

https://gerrit.wikimedia.org/r/714720

Mentioned in SAL (#wikimedia-operations) [2021-08-25T18:05:44Z] <urbanecm@deploy1002> Synchronized wmf-config/InitialiseSettings.php: 2b14eb525e99008d5103a93c5bd01f75211dca99: Enable topic subscriptions as a beta feature on Wikipedias except enwiki (T287801) (duration: 01m 06s)

@matmarex: It seems for Russian Wikipedia, the list item for "Receive Notifications" is missing under Discussion Tools section on Preferences>Beta Features page.

Also, I have already mentioned this to @ppelberg that on Ja wiki, when I use Google Translate on the Preferences>Beta Features page, the word "Receive Notifications" gets duplicated and both were hyperlinked. I know we generally ignore these cases, but mentioning it anyways : )

In T287801#7313787, @Ryasmeen wrote:

@matmarex: It seems for Russian Wikipedia, the list item for "Receive Notifications" is missing under Discussion Tools section on Preferences>Beta Features page.

It looks like the Russian translation hasn't been updated yet since we added that item: https://translatewiki.net/wiki/MediaWiki:Discussiontools-preference-description/ru (last edited in February)

Also, I have already mentioned this to @ppelberg that on Ja wiki, when I use Google Translate on the Preferences>Beta Features page, the word "Receive Notifications" gets duplicated and both were hyperlinked. I know we generally ignore these cases, but mentioning it anyways : )

It looks like there was a mistake in the Japanese translation, which included the words "Receive notifications" in English, and perhaps caused Google Translate to get confused. It has just been corrected yesterday: https://translatewiki.net/w/i.php?title=MediaWiki:Discussiontools-preference-description/ja&diff=10255066&oldid=10169336 and this change should reach the wiki with the deployment train next week.