I've talked with the author and he plans to get some sample chapters together to shop to a publisher (Manning). He mentioned that he is having a weekly design patterns study group in London where he plans to try out the text. Currently there is only some intro text and the Factory pattern, but he expects to have several more patterns completed by end of year.
I thought the idea was so cool that I'm trying to put together a study group in Boston. If you're interested, join the Boston.pm list or email me directly at drew at drewtaylor dot com. Right now I'm thinking either before/after the monthly meeting or 1-2 times a month at some other location. I've done some studying of patterns, but I would love to have a better idea of how to properly implement them in perl. Anyone can code, but only some people have what it takes to properly program. ;-)