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Fans of "Harry Potter" are set for a magical 2016 after J.K. Rowling announced that a new stage play featuring the boy wizard will open next year in London.

The Scottish author announced on Twitter that "Harry Potter and the Cursed Child" will tell an "untold part" of Potter's story, but insisted the play was “not a prequel.”

It “is the result of a collaboration between writer Jack Thorne, director John Tiffany and myself” she said, adding that she was "confident" that when audiences see the play they'll understand why she chose the stage instead of printed word to tell the story.

I'm also very excited to confirm today that a new play called Harry Potter and the #CursedChild will be opening in London next year. — J.K. Rowling (@jk_rowling) June 26, 2015

It will tell a new story, which is the result of a collaboration between writer Jack Thorne, director John Tiffany and myself. #CursedChild — J.K. Rowling (@jk_rowling) June 26, 2015

I don't want to say too much more, because I don't want to spoil what I know will be a real treat for fans. #CursedChild — J.K. Rowling (@jk_rowling) June 26, 2015

However, I can say that it is not a prequel! #CursedChild — J.K. Rowling (@jk_rowling) June 26, 2015

To answer one inevitable (and reasonable!) question - why isn't #CursedChild a new novel? - I am confident that when audiences see the play — J.K. Rowling (@jk_rowling) June 26, 2015

they will agree that it was the only proper medium for the story. #CursedChild — J.K. Rowling (@jk_rowling) June 26, 2015

Fans were quick to react to the news on Twitter, with one saying they were "saving all of my money for the next twelve months so I can go to another continent to see a play."

Rowling's announcement came on the 18th anniversary of the U.K. publication of "Harry Potter and the Philosopher's Stone."

The author's seven "Harry Potter" novels have sold more than 450 million copies around the world, and spawned an eight-part film franchise that grossed more than $7 billion at the worldwide box office.