Despite Namco Bandai trademarking tons of names for a new Tales game, no one really seems to know which one will be the real name.
Now we have a very good hint, found by our friends at Siliconera. Apparently Tales of Zestiria has been trademarked in Europe, making it the only new trademark to be filed in the West.
Namco Bandai filed for this name on the 30th of August, according to the filing on the European trademark database.