Here it comes:

Warner Brothers announced the start of production on the fifth Harry Potter movie, The Order of the Phoenix, and also revealed additional casting for the movie, including Imelda Staunton and 14-year-old newcomer Evanna Lynch, who beat more than 15,000 hopefuls at an open casting call to play Luna Lovegood.

As production gears up at England's Leavesden Studios, new cast members include Staunton as Dolores Umbridge, the new Defense Against the Dark Arts teacher; George Harris as Kingsley Shacklebolt; Helen McCrory as Bellatrix Lestrange; Natalia Tena as Nymphadora Tonks; Kathryn Hunter as Mrs. Figg; and Lynch, who plays Lovegood, a Ravenclaw student who becomes an important ally of Harry, Ron and Hermione (SciFi Wire).

Goblet of Fire was a better movie than Prisoner of Azkaban movie, so I hope this one will be good too.  I am concerned about the appearance of the Thestrals and Harry's detentions (you know what I mean).  I hope they don't cheat on these horror elements.