How many series?
So far Lego has said that there will be 8 series 1 for each movie and if they sell they could make more. All the figures will be from LEGO-Harry Potter years 5-7. Some figures such as Colin Creevey will be updated with a new torso and legs.
New figures, Torsos and Pieces
The line will introduce new figures such as Cho Chang and Rita Skeeter. It will introduce new torsos for Hufflepuff and Ravenclaw others will be exclusive such as Uncle Vernon or Rita Skeeter. Rita will introduce a new piece: Her Ouick Quotes Qwill. For seperat series may include characters such as: Proffessor vector, Proffessor Sinstra and Ernie Macmalliam.