http://movies.yahoo.com/shop?d=hv&cf=info&id=1808718754
The trailer link is above the picture of the movie poster. The poster looks kind of stupid I think.
Looks pretty good, looks like a re-telling of the first game except the protagonist is a woman this time. It also seems the focus is on atmosphere and scares instead of action, which is exactly how a movie based on the Silent Hill games should be.