Filter does not work ...

I was reading the tutorial available from the page "Node Profile Package" (http://drupal.org/node/129957). I wanted to try a filter which would show the children of a parent content type. It did not work. I took a look at the view_filter table and I saw that the filter value is "nodefamily_child.parent_nid". There is no such table in the database as "nodefamily_child", just "nodefamily". But there is nothing in table "nodefamily"! Further investigation in the code (nodefamily_ct_relation_overview()) shows that the relations are actually stored in variable 'nodefamily_relations'. According to this my best case guess is that the filter feature is a work in progress.
Can we expect it to work in the future? Roughly when?