* When $EditSubmitButtonLabelPublish is true, MediaWiki will label the button
to store-to-database-and-show-to-others as "Publish page"/"Publish changes";
if false, the default, they will be "Save page"/"Save changes".
+* The 'editcontentmodel' permission is now granted to all logged-in users ('user').
+ instead of just administrators ('sysop'). Documentation for this feature is
+ available at <https://www.mediawiki.org/wiki/Help:ChangeContentModel>.
+* $wgRevisionCacheExpiry is now set to one week by default instead of being disabled.
=== New features in 1.28 ===
* User::isBot() method for checking if an account is a bot role account.