Harry Potter and The Cursed Child

Harry Potter and The Cursed Child is an upcoming stage play of the famous Harry Potter series. written by Jack Thorne and based on a story by author J. K. Rowling, Thorne and director John Tiffany. The play is scheduled to open in July 2016 at the Palace Theatre, London, England. 

The play is set nineteen years after "Deathly Hollows" follows the story of Harry Potter himself as a ministry officer and his youngest son, Albus Potter. This Harry Potter story is considered as the 'eighth Potter story'. 

The play's official synopsis was released on 23 October 2015:

It was always difficult being Harry Potter and it isn’t much easier now that he is an overworked employee of the Ministry of Magic, a husband and father of three school-age children.
While Harry grapples with a past that refuses to stay where it belongs, his youngest son Albus must struggle with the weight of a family legacy he never wanted. As past and present fuse ominously, both father and son learn the uncomfortable truth: sometimes, darkness comes from unexpected places.

The producers of the play have revealed the lead casts. Play as Harry, Ron, and Hermione are Jamie Parker, Noma Dumezweni and Paul Thornley. There are controversies on the casting of Hermione, criticising the choice to cast a black actress in the role, when the part’s original actress had been white.

The cast of 'Harry Potter And The Cursed Child'

But the author of Harry Potter herself, J.K. Rowling, is excited about the casting and showing her support on her twitter account:

Canon: brown eyes, frizzy hair and very clever. White skin was never specified. Rowling loves black Hermione.

Sources:
Harrypotterwiki
http://www.huffingtonpost.co.uk/2016/01/04/emma-watson-hermione-noma-dumezweni-harry-potter_n_8909962.html