Sony is currently working on its next-generation PSVR, and if UploadVR's sources are correct, the new headset could have some tech that no other headset does. Namely, it's said to have a motor inside for haptic feedback. If that's true, it would be the first VR headset that we know of that offers such a feature.
The next PSVR will also get a significant display overhaul. The new device reportedly features a dual-screen setup (the current PSVR has a single display shared by both lenses) with adjustable lens spacing. The new PSVR should also have significantly improved image quality thanks to a 2000x2040 per-eye resolution. Supposedly, the next PSVR will also include gaze-tracking cameras for foveated rendering, which would help with the performance requirements to drive those high-resolution panels.
It seems like Sony may be working to reduce the cable clutter with the next PSVR too. The original model required a breakout box with a pair of cables that ran back to the headset. The new device will reportedly run off a single USB-C cable, which would plug into the front port of the PS5 console.
Finally, the new PSVR will use internal cameras to handle spatial awareness and controller tracking, which would eliminate the need for a tracking camera mounted above your TV screen. Inside-out tracking makes a lot of sense given the design of the upcoming PSVR2 controllers.