As revealed during Square Enix's E3 2015 conference, the next installment of Star Ocean will indeed be coming westward next year. Unlike its Japanese release, this will be exclusive to PS4, and not a cross-gen release. Foregoing the number in the title, Star Ocean 5's official title will indeed be Star Ocean: Integrity and Faithlessness.
Debut footage was shown:
. I think the battle system is pretty much typical Star Ocean, so I'm glad of that. Yeah, I think it could be pretty great.