According to the latest news I got, the next Harry Potter movie [Harry Potter and The Deathly Hallows] will be divided in two halves or sequels. This action is taken because there are too many important details on OoTP that cannot be cut on the scene [unlike the previous movies with many cutting scenes in it]. It also prevents the HP Freaks’ protest about the unspecified stories in the former movies.
So yeah, there’s huge possibility that we’ll be served – hopefully – a better movie this time. And oh yes, the movie will be released – hopefully again – in November 2008