Tales of Zestiria is coming west in northern autumn, and while it's confirmed as a PlayStation 3 release, a Dutch retailer has it listed as coming to PS4 as well.
Of course, listing it for PS4 could also be a typo, not that I would personally know about that sort of thing, really.
However, according to the listing on Nedgame, the game is slated for release on September 25, which sounds somewhat accurate considering the day of the week it falls on. The autumnal equinox occurs on September 23, which is "northern autumn" and also a Tuesday in North America - so it's even more possible.
The game hasn't been announced for PS4, but Gematsu has heard rumblings of a port before.
Back in February, Tales of Zestiria popped up in Steam's database, suggesting it may eventually be ported to PC. The listing originally stated the title of the game before being changed to TOZ.
Hopefully Namco will confirm a release date soon, and possibly announce whether the RPG will arrive on platforms other than PS3.