Even though it was early September, I guess that means he's out for the rest of this season (assuming they make it to the Super Bowl). The consensus opinion on the Falcons fan sites seems to be that they'll draft a speed back to replace him, so he'll be a free agent after this season.
Hope Dallas or Houston pick him up so I can watch him without paying for Sunday Ticket.
He used to get a bad rap for being injury-prone LONG before he ever actually started missing games due to injury, though. Now he's finally lived up to the negativity, though: he missed six games last season from two concussions and a "hip pointer," and he's missed 14 games this season.