The tutorial is currently being worked on. It should be available in a month or so.
Does the current JBoss book cover EJB 2.0 or is it just the previous version? If not, will there be a new book out for that? Or should I get a different book on EJB 2.0?
If you haven't done so, you should pick up "Mastering Enterprise JavaBeans" by Ed Roman. The 2nd edition covers EJB 2.0 as well as introduces EJB to a newbie very well. The JBoss book (as far as I know) covers very JBoss specific stuff - like how to work with it and how to create MBeans. To learn EJB in general, pick up a EJB book.