In a recent blog entry, voice actor Rikiya Koyama who provides the voice for the character of Duke Pantarei in the Japanese version stated that the Vesperia franchise was expanding, appearing first on the XBox 360, an animated movie, and later ported to the PS3 with the next stop being on the
Wii. Of course, he could have been referring to Tales of Graces. Namco Bandai has not officially confirm nor deny a
Wii version.
Source
Source
[UPDATE] It has been confirmed that the voice actor was referring to Tales of Graces.
No Tales Of Vesperia For The Wii After All