You can stop waiting, its been released.
I'm a bit late in releasing this news, but our "Flex 3 Training from the source book" was released last week, and is now available from our publisher, as well as the major online bookstores such as Amazon, and Barnes and Noble. Speaking of Amazon, we are currently the #843 best selling of all their books, #15 in the Computers and Internet / Software category, and #8 in Computers and Internet / Programming. Thanks to all of you who have bought our book, and pushed the sales ranks so high.
Anyhow, I know folks have been asking me for months when this book would finally be released, and the answer is, last week.
Enjoy.

Should I switch over to the Flex 3 book now?
Thanks
However I seem to be having an issue with the categorizedProducts.xml file It is empty. Am I missing something. I can access some of the other files on the flexgrocer site. Any suggestions please It has sort of stopped me dead.