As to what to expect from the upcoming season, showrunner Glen Mazzara had this to say:
I’m incredibly proud of the prison. I think our crew has done a great job. It’s a huge sense of scale and magnitude I haven’t seen on any other show as far as construction. What’s important to us is the prison itself is now a character in the show. It’s a haunted house, it’s scary, it’s frightening, and there are parts of the prison that are always terrifying, that are always inaccessible to our group. It’s not necessarily the blessing that the prison in the comic book turned out to be.
Season 3 of “The Walking Dead” starts up again this October.