We tell people "To receive a notification when a new report is published, SUBSCRIBE." by even YELLING AT ME IN BOLD LETTERS currently, on
- https://www.mediawiki.org/wiki/New_Developers/Quarterly
- https://www.mediawiki.org/wiki/New_Developers/Quarterly/2018-07
- https://www.mediawiki.org/wiki/New_Developers/Quarterly/2018-04
- https://www.mediawiki.org/wiki/New_Developers/Quarterly/2018-01
- https://www.mediawiki.org/wiki/New_Developers/Quarterly/2017-10
However, my understanding is that currently no future newsletters are planned.
PS: I'm too stupid to find past newsletter editions of https://www.mediawiki.org/wiki/Newsletter:New_Developers_Quarterly