MediaWiki 1.27/en

MediaWiki 1.27 is a future release. Consult the file for the full list of changes. It is currently deployed on Wikimedia Foundation wikis through incremental "1.27.0-wmf.NN" branches starting September 29, 2015 (see details of each). The 1.27.0 stable release is expected to come out around May 2016, and will be a Long Term Support release (LTS) which will be supported for three years. Download the or checkout the   branch in Git to follow this release.

InstantCommons made easier and cheaper
will now truly work out of the box, as long as your users can connect to upload.wikimedia.org: thumbnails will be served from that domain instead of requiring local generation (251556).

More documentation translation
Works continues on the migration to the Translate extension, now used by about 3000 pages. The size of translations text increased by various megabytes.

Thanks go to our tireless translation administrators and translators but also to Google Code-in 2015 students, in particular IoannisKydonis who migrated thousands of translations including the entire Manual:FAQ.

Breaking changes

 * MediaWiki now requires at least PHP 5.5.9. This corresponds with HHVM 3.1.
 * The RandomRootPage extension has been merged into MediaWiki core. If you have it installed, you should uninstall it.
 * The ApiSandbox extension has been merged into MediaWiki core. If you have it installed, you should uninstall it.