The title of the seventh and final Potter book has been revealed - it's Harry Potter and the Deathly Hallows.
The title was revealed on JK Rowling's website, and her spokesperson in Edinburgh confirmed to Newsround that it is the title.
JK made her fans work for the title though, because you have to play a game on the website to access it.
You have to find a secret door, work out how to open the door and then play a game of hangman to learn the title.
At the moment no-one knows exactly what the title means, but that hasn't stopped eager Potter fans trying to work it out.
JK Rowling has been trying to decide between three different titles for the last few months, which is why it's taken so long for the news to come out.
Harry, 13, from Leicestershire emailed Newsround and said: "It sounds interesting, but a bit sinister..."
Mollie, 13, reckons: "I think this sounds quite creepy. Maybe it is the last book and the DEATHLY HALLOWS could hurt Harry."
Aoife, 11, from Ireland wonders: "Hallows ? What does that mean ? Gosh ... Godric's Hollow? No, different spelling... I don't know what to think..."