1) People who made the spec know the problems encountered in 2.1 well enough, so I think the same mistakes will not be repeated. Or that would mean the death of entreprise beans
2) The title of the book includes "from Novice to Professional". A good bet that you'll learn a lot about ejb3.0 there.
Originally posted by Raghu Kodali:
While poring over the 800-plus pages of the EJB� 3 spec, which spans three
separate documents, we saw an opportunity to translate this material into an approachable format that reads well and makes liberal use of examples that you can build, execute, and further explore on your own machine. In this book, we introduce the EJB� 3 API through a series of digestible chapters, allowing you to become comfortable with the EJB� 3 API one topic at a time, without having to swallow the whole enchilada in one humongous gulp. In the spirit of our Apress Wines Online application, which we use for numerous examples throughout the book, we want you to truly savor and appreciate the richness of the EJB� 3 API.
Coming from the EJB� 2.x world, it was like a breath of fresh air, and reminded us of how it felt to discover Java� technology after years of programming C and C++.