Harry Potter and the Cursed Child, a play created from a story by J.K. Rowling (July 2016).
In the play, Harry and Ginny’s son Albus goes to Hogwarts and befriends Scorpius Malfoy, Draco’s son. Albus and Scorpius steal a Time-Turner and alter time. They are encouraged in this by a mysterious young woman named Delphi who turns out to be masterminding the rise of Dark Magic once again.
From the Web
Harry Potter and the Cursed Child: Rewriting Stereotypes by Ilaria Villa
Pottermore: Harry Potter and the Cursed Child
The theatre production opened in the West End of London at the Palace Theatre on 30 July 2016: Harry Potter and the Cursed Child, Parts One and Two