Tales of Zestiria will be, probably, the name of the next ‘Tales of’ game.
Tales of Zestoria, Tales of Zestiria and Tales of Zestias were registered in Japan by Namco Bandai. The company usually registers a large number of names and, finally, only uses one of them. This time we can almost assure that Tales of Zestiria will be the name chosen by Namco Bandai for the next ‘Tales of game’ due to a simple reason: it has been the only trademark filed in Europe by the company.
Thanks, Siliconera.