With Glen Mazzara's exit from AMC's The Walking Dead official, a successor has been named.
That successor is Scott Gimple, a writing producer who joined the series in season two. He has written a number of episodes, including the upcoming penultimate episode of season three. Whe Mazzara was tapped for showrunner after Frank Darabont's abrupt departure after season one, Mazzara appointed Gimple as his second-in-command. Now it seems the student has become the master.
Gimple will take over when the fourth season goes into production later this year. The second half of season three - which airs in February - wrapped filming before the holidays, and Mazzara will finish up post-production for the rest of season three.
Source: Hollywood Reporter