Sky Movies and MyMovies.net have posted what looks like the full version of the trailer we saw earlier on BBC's Film 2004, shown exclusively on HPANA.
This slightly longer (Windows Media streaming only) clip starts with the Hogwarts Express, and we see some more Dementors and a peek at Professor Lupin. Once that's over, it's the same teaser we saw earlier.
Potter World Online has captured a few images and provided direct links to the media so that it opens in Windows Media Player, but the server is incredibly bogged down.
Keep your eyes peeled, we're looking for a better quality download and we'll have it up as soon as possible.