I did a little lookin' into this. I like movies with Robert Duvall. The movie is actually called "Broken Trail" The official website for the movie is
http://brokentrail.amctv.com/. It says that it will be coming out in June 2006. Here is the story line from the website.
In the waning days of the Old West, veteran rancher Print Ritter (Robert Duvall) and his nephew Tom Harte (Thomas Haden Church) set out on an arduous horse drive from Oregon to Wyoming. On the trail, they risk their lives to save five innocent Chinese girls who have been sold into prostitution. With this decision, the horse drive turns into an epic and perilous journey that leaves both the men and women changed forever.
Sounds like a good movie and I am looking forward to seeing this. The only other western movie that Thomas Haden Church was in was "Tombstone". I think that most people will agree that it was a great movie. So, if he carries that into this one it should be good.