WordPress 1.2.1 was released October 6, 2004.
The official release can be found here.
List of Files Revised in 1.2.1
wp-admin/admin-header.phpwp-admin/bookmarklet.phpwp-admin/categories.phpwp-admin/edit.phpwp-admin/options.phpwp-admin/post.phpwp-admin/wp-admin.csswp-comments-post.phpwp-includes/functions-formatting.phpwp-includes/version.phpwp-login.php