Harry Potter fans are in for a treat after Warner Brothers confirmed plans for a trilogy of spin-off films based on the best-selling books.

Warner Brothers will release three films in 2016, 2018 and 2020 based on Rowling's screenwriter debut 'Fantastic Beasts and Where to Find Them'.

The films will be set in an extension of Rowling's wizarding world and will feature character and magical creatures inspired by Harry Potter's Hogwarts textbook and its fictitious author, Newt Scamander.

The first film will be directed by David Yates, who helmed the last four Harry Potter films.

Last week Rowling sent out a cryptic tweet to her 3.82m followers about the upcoming films. The tweet "Cry, foe! Run amok! Fa awry!" is clearly an anagram meant to warn us that her "fur work canoe may fray.", was eventually decoded as "Newt Scamander only meant to stay in New York for a few hours... " by Potter fan Emily Strong.

Meanwhile, it has been reported Rowling is planning to build her own "Hagrid Hut" in the grounds of her Perthshire estate.

It is believed the writer plans to build the stone summerhouse on the edge of a forest in her Killiechassie Estate.