Well I didn't get a chance to really check it out but the guy working the merch booth assured me that they contained the updated tour dates. I lost interest pretty fast once he said they didn't have my size so I have to take his word on it for now. However I do recall that they reprinted the Odyssey shirt for when they did Gigantour with updated dates, Gigantour 2005 written above the dates and "The Odyssey Continues" printed below the dates so I'd say its very likey they would reprint the shirt for this tour as well.
