do 2nd editions of ebooks have to be purchased if i own 1st edition?

What happens when I have purchased and ebook and a second or later edition is then published, do I have to pay again even if it has only small differences?
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  • Hello Tim,

    Thanks for your interest in O'Reilly books. If you have an older edition of a book, you can receive 40-50% off the purchase price of a newer edition.

    Register your book at, and we'll send you a 40% upgrade discount for print books and a 50% upgrade discount for ebooks when we publish a new edition.

    View a complete list of your registered books in the Books section on Your Products page.

    Note: Books published by Wiley, Wrox, Sybex, For Dummies, Visual, dpunkt, O'Reilly Verlag, and Microsoft Press Deutschland are excluded from this offer.

    Best regards,
    Paul Fichera
    O'Reilly Media
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