I'm delighted to hear he is going to do the series - not that fly fishing needs a 20 volume set - but he is a wonderful writer who gets his message across to the reader. That is a problem with much of what is currently in print, it isn't helping anyone but the writer who hopefully got paid for the book. We would love to review it here as well, we have a bit of a reputation for doing excellent, fair reviews just in case anyone is listening.
I also have my autographed copy of Presentation which I reviewed in detail here as well.