I bought this book after hearing Hal Stern reassure folks that although WP 3 was on the verge of being released, that my money would not be wasted because Professional Wordpress would be updated online...am I missing something? Or did I purchase this book after hearing a false promise?

i'm assuming you're talking about a question raised at WordCamp Chicago in June.

The book's contents all are applicable to WP 3.0 and future releases. There are new features in WP 3.0 (custom post types, for example) that obviously aren't covered. I believe my comment at the time was that we had the Wrox forums for discussion of the book's contents and that we'd comment on WP 3 issues/updates as appropriate.

I've been updated my WordCamp talk to make it WP 3.0 relevant, and have continued to share that content (as of WordCamp Boulder, July 11):

http://slideshare.net/freeholdhal

It is not our intention, nor is it Wiley/Wrox's usual publication process, to update sections or entire chapters online. Doing so without keeping the entire book internally consistent would be a disservice to readers.

Thanks Hal. I guess it was my misunderstanding & now my disappointment. I fail to see how it would be a disservice to readers if you were to post an addendum that covered WP 3 new features such as custom post types.

It is a disservice to the readers to not be able to buy a new book with few changes, thus depriving them of a library of books covering the same topic.

My misunderstanding and disappointment, too.

So is there a book with WP 3.+ on the horizon?

WP 3.0 was released on June 17th, 2010....