An open casting call for young actors from the UK and Ireland was held last year - resulting in the new Harry, Ron and Hermione being cast, along with other younger characters such as Lavender Brown and Neville Longbottom. They join a cast of established actors who will once again bring the wizarding world of Hogwarts alive.

HBO's new "Harry Potter" television series is expected to debut in 2027 and despite controversy, J.K. Rowling is involved. Here's what we know.