Index: wp-includes/post-formats.php
===================================================================
--- wp-includes/post-formats.php	(revision 23940)
+++ wp-includes/post-formats.php	(working copy)
@@ -94,7 +94,7 @@
 	foreach ( $values as $key => $value )
 		$values[$key] = get_post_meta( $post_id, '_wp_format_' . $key, true );
 
-	return $values;
+	return apply_filters('post_format_meta', $values);
 }
 
 /**