There's an announcement ready for translation here:
https://meta.wikimedia.org/wiki/Community_Tech/LoginNotify/Announce

However, this will be postponed a few weeks because of a performance issue.

In T171109#3479583, @Johan wrote:

There's an announcement ready for translation here:
https://meta.wikimedia.org/wiki/Community_Tech/LoginNotify/Announce

However, this will be postponed a few weeks because of a performance issue.

Hi Johan, I want to propose a small wording tweak if it's not too late for that. Sorry, I should have caught this earlier.

Instead of

This means that you’ll get a notification every time you log in from a new device or IP address.

we want to say

This means that you’ll get an email every time you log in from a new device or IP address.

Sure, go ahead.

Done! Thanks!

There's an issue with an unknown number of persons not getting the notifications. I'm holding back on further communication until we know how big this issue is, or have solved it.

In T171109#3551097, @Johan wrote:

Blocked by T173888. Still in Tech News, as it's live and people should know what's happening if they get the notification, but with an item saying it's not working for everyone yet.

I think we're pretty sure it's working now since everyone we tested with got notifications fine. I think this is good to go now and we can take out the line saying it's not working for everyone.

OK, removing that item from Tech News.