A Bioregionalisation Workshop Steering Committee was formally convened in August, 2006, following endorsement at CCAMLR XXIV and ATCM XXVIII. This update presents information on progress made by the Steering Committee following its intersessional work. Tasks required prior to the 2007 workshop are identified, as well as issues to be discussed. The paper is intended to provide background and a framework for discussion at the 2006 meeting of the CCAMLR Scientific Committee and the Commission. A list of Steering Committee members and draft workshop agenda are attached.