The book is coming out early Saturday morning and no-one's meant to know how the story unfolds until then.
A spokesman for JK says only five people in the world have legally read it.
Missing
JK's sueing
The paper said it got the copy from a shop in Brooklyn, New York.
It supposedly revealed there are a load of new characters and that someone does die, but we knew that already!
JK's US publisher is sueing for "tens of millions of dollars" because it goes against a court order which says no one can publish anything from the book in the UK.
The site can obviously be seen in the UK.
A whole vanload of copies was stolen in the north-west of England recently as it was on its way to shops.
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