It has no title, but it does have a 2-season order.

AMC announced today that the buzzed-about Walking Dead Companion Series, a spin-off of The Walking Dead codenamed Cobalt, that’s set to take place in Los Angeles when the zombie apocalypse struck (back when Rick was in a peaceful little coma), will air its 6-episode first season this Summer. The second season will air in 2016, setting up zombie fun all year round.