According to the ebook page -- "If you purchase just the PDF eBook for $27.50, you will be entitled to receive periodic updates as the authors complete the book, as well as the final PDF when the book is finished, for no additional charge."
I didn't receive any update copy in my mailbox and I failed to see any link that allow me to download the update copy from your web site (without purchase a new copy). Do I missed any registration steps?
My current purchased copy is at 12 Dec 2007 and I want to get the latest copy of "PrePrint™ Edition, Version 3, 636 pages, published May 4, 2008".
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