Extreme, Neurosis, Abbath, Strung Out, Devin Townsend Project, Sanctuary, Swingin' Utters, Veil Of Maya, The Acacia Strain, The Brains, Obscura, After The Burial, Cattle Decapitation, Masked Intruder, Mass Murder Messiah, Sandveiss and more have been added to the bill for Heavy Montréal 2015. Daily lineups for the festival, which will...