There's a MirrorMask exclusive at Yahoo -- a new trailer. It's now up at http://movies.yahoo.com/feature/mirrormask.html in Windows Media and in Quicktime. (I believe it's up for a limited time.)
Spread the word. Spread the link. (If lots of people watch the trailer then Sony Pictures will know that lots of people want to see it.)
According to their MirrorMask page at http://movies.yahoo.com/shop?d=hv&id=1808624595&cf=info it's going into US release on September 30th 2005, which sounds about right.
(Here's a direct link to the Yahoo trailer in Windows Media format.)
And, for those who were wondering, the actual MirrorMask site is http://www.sonypictures.com/movies/mirrormask/main.html
And the old trailer (which has actual movie music on it, which neither the first one or the new one do) is currently up at: http://www.sonypictures.com/previews/player/movies/mirrormask/ in Windows Media and Real format.