Extensions
Extension management is a hot topic at WMF. Kunal is working on it, and there is an RFC at https://www.mediawiki.org/wiki/Requests_for_comment/Extension_management_feedback
Of the bundled extensions in the MediaWiki download, there are several new ones appearing in the REL1_31 version:
- CodeEditor
- MultimediaViewer
- OATHAuth
- ReplaceText
See too: https://www.mediawiki.org/wiki/Suggestions_for_extensions_to_be_integrated