From the BBC:

The first clips from the fourth Harry Potter film - "Harry Potter and the Goblet of Fire" will be shown next Saturday during the US tv premiere of "Harry Potter and the Chamber of Secrets". The audience will see excerpts and behind the scenes footage from the upcoming movie - to be released in the UK on November 18 - as well as interviews with its young stars.

"Harry Potter and the Goblet of Fire" will introduce Ralph Fiennes as Lord Voldemort, Miranda Richardson as gossip columnist Rita Skeeter and Katie Leung as Harry's first girlfriend.
Read the entire article

here.