This software version came out fairly recently (about a month ago) -
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2016-June/000191.html
- https://www.mediawiki.org/wiki/Release_notes/1.27#MediaWiki_1.27.0MediaWiki 1.26 is no longer supported as of MediaWiki 1.28's release, November 8, 2016.
https://www.mediawiki.org/wiki/MediaWiki_1.28