Robert Kirkman has been expanding the world of The Walking Dead since last year and it's been leading up to All Out War, a new 12-part story arc that was just announced at Image Expo. The event is taking place today in San Francisco and included the news that we'll be getting issues of The Walking Dead All Out War twice a month:

Via The Walking Dead: "First, the faction teasers we’ve been posting are all part of the upcoming 12-issue arc “All Out War.” It is going to get bloody. That starts in October. And we’ll have something more with those faction images down the road (the mystery doesn’t end folks).

Second, coinciding with the new arc is some personnel additions: we’ve got Dave Stewart on cover colors. You know Dave from Hellboy, B.P.R.D., Captain America, Daredevil, Star Wars, and tons of other major titles. We’ve also added Stefano Gaudiano on inks. Stefano did awesome work on Daredevil, Gotham Central, X-O Manowar, and more. We’ve still got Charlie on pencils and Cliff on tones. We’re stoked to have this team working together on The Walking Dead.

Ok so that’s the first two big items. Are you ready for the third? Stand up so you can sit down again because “All Out War” will be published TWICE a month! The biggest complaint we get* is that you have to wait so long between issues. Well complain no more. For half a year you’re going to be hitting your comic shop every two weeks (well, for the most part, silly Julian Calendar)."

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We want to give TheWalkingDead.com a big thanks for the news and teaser images below. More details will be available at Comic-Con later this month and we'll be covering the event live to bring you all of the latest news on The Walking Dead. Catch up on our coverage of the comic book series by visiting the following links: