Zwischen Version 2.2.1 und 2.2.2 haben sich folgende Dateien geändert.

• wp-includes/formatting.php
• wp-includes/version.php
• wp-includes/general-template.php
• wp-includes/theme.php
• wp-includes/widgets.php
• wp-includes/functions.php
• wp-app.php
• xmlrpc.php
• wp-settings.php
• wp-admin/edit-comments.php
• wp-admin/admin-functions.php
• wp-admin/admin-db.php
• wp-admin/import/wordpress.php
• wp-admin/upload-functions.php
• wp-admin/link-import.php
• wp-admin/options.php

-> http://trac.wordpress.org/changeset?new=branches%2F2.2%405849&old=branches%2F2.2%405725#file7