It's the news fans have been waiting for - the seventh and final Harry Potter book will be published on Saturday 21 July 2007.
Harry Potter and the Deathly Hallows has already topped the best seller list for one online shop even though no-one knew when it would be released.
But now JK Rowling has confirmed the publication date on her website.
The book will go on sale in the UK, America and all English-speaking countries at one minute past midnight.
That's just eight days after fifth film, Harry Potter and the Order of the Phoenix is released in cinemas.
Who will die?
JK Rowling has said that two characters die in the final book and Potter fans are desperate to find out if their hero Harry is one of them.
JK Rowling confirmed the publication date on her website
Book shops are preparing themselves for scenes of Potter mania when the children's hardback, adult hardback, gift edition and audio book are all released at the same time.
Plans are already in place to help postal workers get the book to fans.
The last book, Harry Potter and the Half-Blood Prince, sold more than two million copies in the UK on the first day of its release, making it the fastest-selling book of all time!