It's possible the recent revelation of the full specs for the Xbox Series X may have actually confirmed some key details about the specs for the PlayStation 5. Important GPU information about both the XSX and PS5 were shared by a poster on a forum in December, and surprisingly the figures given for the Microsoft console have turned out to be accurate.
https://www.notebookcheck.net/PlayStation-5-with-52-active-CUs-at-2-0-GHz-and-13-3-TFLOPS-did-the-recent-unveiled-Xbox-Series-X-specs-just-confirm-PS5-rumors.457689.0.html