A new "version" of a Leanpub book is created when an author publishes an update to a book. Typically this means they have added new content to the book, or made edits to the book to improve it.

When a new version of a Leanpub book is published, it is immediately made available for free for people who have already bought the book. The new version will also automatically be the version that is purchased by new buyers of the book.
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A new "edition" of a book is a new, different book.

The main reason to create a new "edition" of a book is when the author has essentially written a new book on the same topic.

If you have purchased a previous edition of a book, and you would like to contact the author to ask them for a discount coupon link for the new edition, please see this article:

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