Archspire will release Relentless Mutation on September 22 2017 via Season of Mist, and the song we've got for you today is a pretty clear indication of how the rest of the album is going to go - incredibly technical and stupid heavy. - This will also be the band's first album with bassist Jared Smith (ex-Harvest The Infection), who officially replaces bassist and vocalist Jaron Evil (Almuric, Funeral Fornication), who left the group in 2014.