They've got contracts to do all seven books(eight movies), in fact they've already started filming the seventh one and she's in it.
-Me
(http://harrypotter.wikia.com/wiki/Harry_Potter_and_the_Deathly_Hallows_(film))
-Me
(http://harrypotter.wikia.com/wiki/Harry_Potter_and_the_Deathly_Hallows_(film))