Sony may be working on a PlayStation Vita successor to combat the Nintendo which may be the company's next -generation PlayStation Vita. The patent indicates that some possible embodiments--or prototype models --of. It's been five years since the worldwide release of Sony's PlayStation Vita handheld console and a newly released patent application suggests. It's well-known that the PlayStation Vita hasn't been a spectacular performer for Sony. Over the years, the shelf space dedicated to the platform.