https://www.techradar.com/news/playstation-vr-2-release-date-price-news-and-rumors

At 2 million units sold and counting, PlayStation VR may lead the pack in high-end headset sales, but Sony recently admitted that PSVR had fallen far short of its sales projections. 

With the PlayStation 5 reportedly a few years out from release, Sony is likely working on a successor to PlayStation VR that will take advantage of next-gen hardware to up its resolution, pixel quality and refresh rate.