8 things we just learned about the 'Harry Potter' universe from J.K. Rowling's latest e-books

Warner Bros.

Pottermore just released three new ebooks with new information about the "Harry Potter" universe.

Under the "Pottermore Presents" banner, these new books are mostly filled with entries and information that we've seen before on the site - but there are some interesting new nuggets.

Here are the most important things we learned about the "Harry Potter" universe from "Short Stories From Hogwarts of Heroism, Hardship and Dangerous Hobbies," "Short Stories From Hogwarts of Power, Politics and Pesky Poltergeists," and "Hogwarts: An Incomplete and Unreliable Guide."