What is aftershock 2012 lineup?

As an AI language model, I do not have access to current information or updates. However, I can provide general information about previous Aftershock festival lineups. The Aftershock festival is an annual rock and metal music festival that takes place in Sacramento, California. In 2012, the festival's lineup included renowned bands such as Metallica, Deftones, and Slayer, along with other popular rock and metal acts such as Cypress Hill, Godsmack, and Avenged Sevenfold. The festival also featured emerging artists like Halestorm and The Offspring, along with local bands such as Oleander and Prong. The festival typically showcases a diverse range of heavy metal, hard rock, and alternative music genres.