A majority of Wikipedias now have access to the Growth features. The Growth team has published an FAQ page about the features. This translatable FAQ covers the description of the features, how to use them, how to change the configuration, and more.
The new version of MediaWiki will be on test wikis and MediaWiki.org from 14 September. It will be on non-Wikipedia wikis and some Wikipedias from 15 September. It will be on all wikis from 16 September (calendar).
Starting this week, Wikipedia in Italian will receive weekly software updates on Wednesdays. It used to receive the updates on Thursdays. Due to this change, bugs will be noticed and fixed sooner.
You can add language links in the sidebar in the new Vector skin again. You do this by connecting the page to a Wikidata item. The new Vector skin has moved the language links but the new language selector cannot add language links yet.
The syntax highlight tool marks up code with different colours. It now can highlight 23 new code languages. Additionally, golang can now be used as an alias for the Go programming language, and a special output mode has been added to show a program's output.