I'm interested in that eyetracking more than anything else.

Like the company’s prior headsets, the XR-3 and VR-3 both feature 200Hz eye-tracking tech developed in-house, which the company claims is the “world’s fastest and most accurate” integrated eye-tracking solution. Eye-tracking is also used for foveated rendering and automatic IPD adjustment, allowing the bi-convex lenses (not Fresnel) to align themselves with the user’s eyes for optimal clarity and comfort.

Are they using the eyetracking to perform pupil swim correction? What are the characteristics of these lenses when it comes to edge to edge clarity, CA, geometric stability, god rays and internal reflections vs Fresnel lenses? And does eyetracking allow them to eliminate the downsides of any trade offs vs Fresnel lenses?
 
Really excited to hear how well this eyetracking performs in practice--especially given that it's an in-house thing.