Harry Potter and the Prisoner of Azkaban is a subtheme of the Harry Potter theme released to coincide with the 2004 movie, The Prisoner of Azkaban. 12 sets in all were released.
2018 LEGO Sets
In 2018, The LEGO Company celebrated the 60th anniversary of the brick and introduced a number of sets to commemorate this. This year also so a number of new and revisited themes including the return of Harry Potter sets after 6 years. New themes such as Jurassic World: Fallen Kingdom, The Powerpuff Girls, Unikitty! and Solo: A Star Wars Story was added to LEGO Star Wars. We also so the discontinuation of LEGO Dimensions and Nexo Knights.