Don Karr updates his contributions to the site 2-3 times a year. I have just uploaded the new material, and you will find the updates here:

Bibliographies:
http://www.digital-brilliance.com/contributed/Karr/Biblios/index.php

Hekhalot Rabbatai
http://www.digital-brilliance.com/contributed/Karr/HekRab/index.php

Kabbalah of Maat
http://www.digital-brilliance.com/contributed/Karr/Maat/index.php

Liber Salomonis
http://www.digital-brilliance.com/contributed/Karr/Solomon/index.php