The San Francisco 49ers release a weekly depth chart that generally doesn't change a whole lot, but once in a while features a modest roster change. You can view the depth chart in the 49ers weekly game release.
This week's release saw the 49ers finally move Michael Crabtree from behind Joshua Morgan to starting receiver opposite Morgan. Prior to this week the depth chart listed Morgan opposite "Ted Ginn OR Braylon Edwards." Edwards is expected back on the active roster after the week seven bye, although there is a slim chance he could be back before then. It will be interesting to see how the team sets up the depth chart upon Edwards' return. Crabtree and Morgan are both coming off big games against the Eagles and look locked in for the foreseeable future.
The second significant move saw the 49ers replace Chilo Rachal with Adam Snyder at the right guard position. Heading into last week's game Rachal remained as the number one RG. This week Snyder has been inserted there and it would seem like he will stick there for now.
One non-move saw Moran Norris remain listed as the number one fullback. It sounds like he will not be playing this Sunday. It turns out his fibula injury was actually a fractured left fibula and will keep him out four to six weeks. He suffered the injury September 18, which would mean a potential return between October 16 and October 30. With an October 23 bye, I'd suspect it's more likely closer to the latter date than the former. In the meantime, Bruce Miller will remain the starting fullback.
For those who missed the mention earlier, the 49ers also placed defensive end Will Tukuafu on injured reserve and activated Colin Jones from the practice squad. The team signed wide receiver John Matthews to the practice squad. Matthews played for Coach Harbaugh at USD. The bigger implication of this move is that Demarcus Dobbs likely will now be active on game days as the second backup defensive lineman along with Ricky Jean Francois.