I noticed that the database has a table named wp_termmeta. I wanted to use it. But when I tried update_metadata('term', $object_id, $meta_key, $meta_value) it returned false. I believe it's failing on line 880 of /wp-includes/meta.php in the function _get_meta_table, i.e. it's not in $wpdb.
Is termmeta to be included in a future wp release? Is active now? If yes, how do I use it?
Thanks in advance.