I've just updated
https://www.mediawiki.org/wiki/Mailing_lists and
https://meta.wikimedia.org/wiki/Mailing_lists/Overview#Mediawiki_and_techni…
. Sorry for the spam, but you really should take a moment to skim and
see whether there are lists there you should join. I especially want to
single out:
design
mediawiki-api-announce
mediawiki-i18n -- localisation and internationalisation
labs-l -- for when you have a question or request re Wikimedia Labs
analytics
wikitext-l -- the new Visual Editor & parser
--
Sumana Harihareswara
Engineering Community Manager
Wikimedia Foundation