I'm thinking with it being the 10th anniversary we may be seeing a number of past favorites that haven't been regularly touring the US. From that thinking I'm guessing Orphaned Land & Brainstorm. Maybe Blind Guardian as a headliner as I don't think they have a big tour planned anytime soon unlike bands like Nightwish, Edguy & Kamelot. Outside of that, I'm really behind on this years releases so far. So I'm going to toss in Haggard as a wishful thinking band.