A trailer has been released for the much-anticipated new Harry Potter TV series, showing the young wizard with his friends Hermione and Ron as they travel on the Hogwarts Express.The first series will be launched at Christmas on HBO Max, it reveals.The first season of the HBO show was adapted from JK Rowling’s first novel, Harry Potter And The Philosopher’s Stone.Further seasons will feature her other novels, with Rowling acting as an executive producer.
