Special issue devoted to selected papers presented at the 16th International Workshop on Matrices and Statistics, Windsor, Ontario, Canada, June 1-3, 2007. Special editors are S. Ejaz Ahmed, Jeffrey J. Hunter, George P. H. Styan, and G\"otz Trenkler. Submission deadline is August 15, 2007. Further details available at the Workshop. Responsible editor-in-chief is Richard A. Brualdi.