According to https://www.sony.com/en/SonyInfo/IR/library/presen/irday/pdf/2021/GNS_E.pdfThey announced that in the first blog post.
Next gen psvr uses a single wire to connect to PS5.
Quote
It will connect to PS5 with a single cord to simplify setup and improve ease-of-use, while enabling a high-fidelity visual experience.February 23rd Eck thread
Pretty much the first thing we knew about it.