Harry Potter reboot is 'really rooted in the real' for one key reason The costume designers behind the new Harry Potter revival series have explained the thinking behind HBO's adaptation. 6 April 2026 The Harry Potter revival will be "really rooted in the real". The Harry Potter reboot costumes will be 'rooted in the real' The upcoming HBO reboot of JK Rowling's wizarding saga - which is being released at Christmas 2026 - will use costumes to make people believe magic could be "around that corner", rather than an otherworldly concept.