The lineup has been revealed for next year’s “Decibel Magazine Metal & Beer Fest: Philly.” The event will take place at The Fillmore in Philadelphia, PA on April 4-5 and it will feature the following: April 4: Dismember (performing “Like An Ever Flowing Stream“), Pig Destroyer, Darkest Hour (performing “Undoing Ruin“), Vastum, Maul, Mother Of…