The upcoming webisodes are title Cold Storage and will premiere on October 1st. the story focuses on a new group of characters struggling to survive the early days of the zombie outbreak, the cast includes Daniel Roebuck (Arzt from Lost) and Josh Stewart.
“Cold Storage tells the story of Chase, (Josh Stewart), as a young man trying to reach his sister in the early days of the zombie apocalypse. He finds temporary shelter in a storage facility run by a former employee named B.J. (Roebuck); however, things are not what they appear.”
There will be four five-minute episodes; more details will be released when AMC issues a press release. Here is a preview image, courtesy of USA Today.