AMC have just released the new official trailer for The Walking Dead Season 2 which was screened @ComicCon. The new series will premiere this October 16th. "It picks up about five seconds in an overlap [with Season 1], literally, you see them driving away from the CDC," revealed executive producer Frank Darabont @ComicCon. "None of that six-month-later stuff." Hit the jump to check out the extended four-minute trailer, which shows the survivors splintering as they leave downtown Atlanta. The group faces off against zombies on a highway after their vehicle breaks down.