<Tr> <Th> ISBN </Th> <Td> 978 - 1 - 338 - 09913 - 3 (US); 978 - 0 - 7515 - 6535 - 5 (UK) </Td> </Tr> <P> Both parts of the stage play's script have been released in print and digital formats as Harry Potter and the Cursed Child Parts I & II . </P> <P> The first edition, entitled "Special Rehearsal Edition", corresponded to the script used in the preview shows and was scheduled to be published on 31 July 2016, the date of Harry's birthday in the series and Rowling's birthday, as well . Since revisions to the script continued after the book was printed, an edited version was released on 25 July 2017, as the "Definitive Collector's Edition". According to CNN, this was the most preordered book of 2016 . </P> <P> In the United States and Canada, the book sold over 2 million copies in its first two days of release . 847,885 copies were sold during the book's first week of release in the United Kingdom . By June 2017, the book had sold over 4.5 million copies in the United States . </P>

When does the cursed child book come out