Sonata Arctica, Arsis, & Holy Grail North American Tour
This was just announced today for Toronto on December 11. I'd have to imagine it's a whole tour, but I didn't find any other dates.
9/6 - Crimson Shadows CD Release Party
10/10 - Sabaton/Amon Amarth (?)
10/17 - Satan
10/18 - King Diamond