JK Rowling has revealed the title of the seventh and final Harry Potter book as Harry Potter and the Deathly Hallows.
Here, Newsround's Potter expert Lizo Mzimba gives his thoughts on the new title.
I love the title Harry Potter and the Deathly Hallows, it's got a really scary feel to it, without giving too much away.
So what does it mean? Well, only JK Rowling knows that, but here are some ideas.
Hallows isn't a word used very much, but one of its meanings is some kind of holy place, and sometimes a memorial for someone. Or even an ancient object belonging to someone important or holy.
So if it's a place it could be where the final battle takes place. Or if it's an object it might be the final Horcrux which Harry has to destroy. And that could be something that belonged to one of the founders of Hogwarts.
More clues might come from names that companies connected to JK have registered in the past - two of them were Harry Potter and the Hogwarts Hallows and Harry Potter and the Hallows of Hogwarts. Although no one but JK knows why these names were registered.
Could the Deathly Hallows be the Hogwarts Graveyard mentioned by director Alfonso Cuaron? He said while making the third film he wanted to set a film in a graveyard, but that JK had told him the graveyard would be revealed as being somewhere else.
However, in an interview for the fifth book, when asked about the Hogwarts graveyard, JK seemed to deny that it was something she'd thought about or planned.
What the Deathly Hallows are, we probably won't find out until the book is released.
But what do we know about book seven?
We know that Harry will be searching for the remaining Horcruxes, and that he plans to visit his parents' graves in Godric's Hollow. We'll also find out something very important about Lily Potter, and there will be more deaths.
The last chapter will describe what happens to the survivors, one of them will become a Hogwarts Teacher. And when she first wrote it, the last word was scar. Although JK has said that might change.
Let us know your ideas for what the title means.