There was a recent patent that got released to the public for what could be a new PSVR headset. It includes eye tracking. This is a pretty big deal for foveated rendering. If a new PSVR headset comes out and it supports eye tracked foveated
rendering, it could potentially kickstart mass foveated rendering adoption. PSVR makes up a large portion of users, and if the new headset gets eye tracking good enough for foveated rendering you can bet that developers will start implementing it.
Mrtv talks about the patent here. https://youtu.be/-q2dc3nt79A?t=84