At Image Expo earlier this month, Robert Kirkman teased that "Merle will be seen again". We now have official confirmation from Michael Rooker himself, that he will be returning for The Walking Dead Season 3. Kirstian Hanson is currently covering WonderCon for Daily Dead and let us know that Michael Rooker announced his return as Merle during the Lollipop Chainsaw panel.
While Rooker didn't go into much more detail, he did mention that he lost 20 lbs for the role. For those that have read the comic, feel free to speculate as to how that may tie into the upcoming events of the show.
The Walking Dead season 3 begins shooting in May, with 16 episodes planned. We'll update this story if any additional information on Merle is revealed during the show.