The 10th edition of the PrOp, -09, is dated September, 2012, i.e., 15 months ago.
This does not yet seem to me to be an unreasonable interval. Let us hope that the 11th edition, -10 if it is not given a new number, will appear in 2014. Note also that -09 and a goodly number of its predecessors are and have always been immediately available at the IBM Publications website. It was not hidden away. John Gilmore, Ashland, MA 01721 - USA
