* Added MWTimestamp::getTimezoneString() which returns the localized timezone
string, if available. To localize this string, see the comments of
$wgLocaltimezone in includes/DefaultSettings.php.
+* Added CentralIdLookup, a service that allows extensions needing a concept of
+ "central" users to get that without having to know about specific central
+ authentication extensions.
=== External library changes in 1.27 ===
==== Upgraded external libraries ====