* 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.
* (T141960) Multi-valued parameters may now be separated using U+001F (Unit Separator)
instead of the pipe character. This will be useful if some of the multiple
values need to contain pipes, e.g. for action=options.
+* The API will now warn if input is not NFC-normalized Unicode or if it
+ contains invalid characters.
+* The 'normalized' list output by action=query and other modules that use
+ ApiPageSet may contain entries where the 'from' value is percent-encoded as
+ the raw value cannot be represented in a valid API response. These are
+ indicated by a 'fromencoded' boolean alongside the existing 'from' parameter.
+* (T28680) action=paraminfo can now return info about all submodules of a
+ module without listing them all explicitly.
=== Action API internal changes in 1.28 ===
* Added a new hook, 'ApiMakeParserOptions', to allow extensions to better
login and visiting the login page while already logged in.
* ResourceLoader::makeLoaderURL() was removed (deprecated since 1.24).
* $.fn.liveAndTestAtStart was removed (deprecated since 1.24).
+* mw.util.tooltipAccessKeyPrefix was removed (deprecated since 1.24).
+* mw.util.tooltipAccessKeyRegexp was removed (deprecated since 1.24).
* Linker::link() and Linker::linkKnown() were deprecated; please instead use
MediaWiki\Linker\LinkRenderer. In addition, the LinkBegin and LinkEnd hooks
were replaced by HtmlPageLinkRendererBegin and HtmlPageLinkRendererEnd