It definitely kills the rumors that production had started a couple weeks ago lol. I think it’s a smart move for them to partner up with a company that has been at the forefront of the tech for 20 years though. Tobii also provided the eye tracking in the Vive Pro Eye. There aren’t too many companies in that space so it probably would have been more strange for Sony not to partner with them. They’ve probably been using Tobii hardware already in their R&D.

There’s actually a short “ebook” on Tobii’s website detailing their eye tracking and foveated rendering capabilities.

https://knowledge.tobii.com/hubfs/Tobii-eBook-eye-tracking-dynamic-foveated-rendering.pdf