The initial lineup has been revealed for next year’s ProgPower USA festival. That event will be held in Atlanta, GA on September 9-11, 2027. Lineup: September 9: Advent Horizon Silent Skies Metal Church H.E.A.T Eluveitie September 10: Royal Sorrow TBA Einar Solberg TBA Unleash The Archers Wind Rose September 11: Power Paladin Ihlo Vision Divine…