Earlier today, we showed you The Walking Dead Michonne collector's card that AMC is giving away at San Diego Comic-Con 2012 this week. Now, AMC has revealed a special, limited edition poster created specifically for the four-day event. Take a look at this 1-sheet, created by Image Comics artist Greg Capullo, that features a gruesome zombie outside the prison, as used in the show's upcoming Season 3.

You can also CLICK HERE for full details on The Walking Dead panel and autograph session at the Con later this week.