Tales Union has an image of the boxart for the European version of Tales of Vesperia for the Xbox 360, as well as some more information about the game's release date.
Update
http://www.fr.atari.com/xbox360/tales-of-vesperia-769.html
Atari has officially confirmed the release date as being June 26th, four days earlier than we previously thought.
4/23: It seems Atari has released another boxart, which is similar to the previous one except that it has a blue-ish background similar to some of the concept artwork from the game.
130°
140°
140°
180°
Ad 
40°
40°
10°
30°
20°
