* Run the installer to upgrade the database schema (if necessary).
+== IMPORTANT: Upgrading to 1.5 ==
+
+Major changes have been made to the schema from 1.4.x. The updater
+has not been fully tested for all conditions, and might well break.
+
+DO NOT ATTEMPT TO UPGRADE A LIVE, PUBLIC SITE TO 1.5 AT THIS TIME.
+NEVER EVER ATTEMPT TO PERFORM AN UPGRADE WITHOUT BACKING UP FIRST!
+
+On a large site, the schema update might take a long time. It might
+explode, or leave your database half-done or otherwise badly hurting.
+
+Among other changes, note that Latin-1 encoding (ISO-8859-1) is
+no longer supported. Latin-1 wikis will need to be upgraded to
+UTF-8, however the updater has not yet been updated to support
+this automatically.
+
+Message changes:
+* A number of additional UI messages have been chagned from HTML to
+ wikitext, and will need to be manually fixed if customized.
+
+
=== Web installer ===
You can use the web-based installer wizard if you first remove the
== Caveats ==
+
=== Upgrading from 1.4.2 or earlier ===
1.4.3 has added new fields to the sitestats table. These fields are
if( defined( 'MEDIAWIKI' ) ) {
/** MediaWiki version number */
-$wgVersion = '1.5pre-alpha';
+$wgVersion = '1.5alpha1';
/** Name of the site. It must be changed in LocalSettings.php */
$wgSitename = 'MediaWiki';