Getting back on topic sort of, I Am Legend, though it is not a "fantasy" novel as we usually think of fantasy these days, or in the sense all the other movies mentioned in this thread have been, it does contain fantasy elements. It is coming out on December 14th. It fits more in the "survival horror" genre, though I hesitate to categorize it as horror since it is so much more than that. A story about the last man on earth kind of fits the definition of fantasy. It is one of my absolute fovorite books. The new trailer for this was just released a week ago or so. The more footage from it I see, the more excited about it I get. This is a film I will be seeing on opening night. Here are the trailers on youtube, if you are only going to watch on of them, watch the very last one.

Trailer #1:
http://www.youtube.com/watch?v=hX773fMkS90

Trailer #2:
http://www.youtube.com/watch?v=C2fWJ6ux8PM

International trailer, also the best trailer:
http://www.youtube.com/watch?v=NXnTp6IFuys