Harry Potter HBO official casting announcement confirms our Hogwarts professors

Warner Bros. has officially made its first casting announcement for the Harry Potter HBO series, and we finally know who will be teaching classes at Hogwarts in the new TV series.

The Harry Potter series will once again adapt the original novels, with each season expected to cover a single book.

Casting rumours have been flying around for nearly a year now, but we now officially know who will be playing some of Harry's teachers.

John Lithgow has been cast as Albus Dumbledore, as per the reports. Similarly, Paapa Essiedu is Severus Snape, and Nick Frost is Hagrid.

Meanwhile, Luke Thallon has been announced as Quirinus Quirrell, Paul Whitehouse will play the caretaker Filch, and Janet McTeer is Minerva McGonagall.

“We are happy to announce the casting of John Lithgow, Janet McTeer, Paapa Essiedu, Nick Frost, Luke Thallon and Paul Whitehouse to play Dumbledore, McGonagall, Snape, Hagrid, Quirrell and Filch,” said Francesca Gardiner, showrunner and executive producer and Mark Mylod, director of multiple episodes and executive producer. “We’re delighted to have such extraordinary talent onboard, and we can’t wait to see them bring these beloved characters to new life.”

No word yet on the all-important casting of our three young leads, but we do know that open auditions for the roles of Harry, Ron, and Hermione were held last year.

With this first official casting announcement, we expect it's only a matter of time before the rest of the reboot's cast is properly rounded out. Watch this space.