We previoiusly reported that a trailer for Harry Potter and the Goblet of Fire would be showing yesterday at Comic-Con in San Diego.
You can read the rest of the review of the trailer shown at Comic-Con here:
One scene included was Harry's talk with a put-out Ron about how he did not submit his name for the tournament, but he was chosen anyway. There was also a shot of the big dance, with Harry, Ron and Hermione all spiffed up. Dragons, mermaids and a dash of Hagrid rounded out the exclusive look.
You can read another review here from AICN.
I have to say this is hands down the best trailer for any of the HARRY POTTER films thus far.