Fine question. I have given Fred access to all of the book so far, so hopefully he'll let me know if anything's changed that I need to update.
Ultimately, of course, the book will become outdated (as would any text on the subject) as PB will continue with updates after the book is published.
However, I would imagine most of the fundamentals will remain the same. Also, I do have the latest version and everything seems to run just fine

Thanks!
-Krylar