Hi Vanniego,
Hope you are well!
I dont know there will be any further updates for Vive Pro Eye with the Eye tracking functionality.
I tried to send an email to VIVE OpenXR and post the issue to the Vive forum, always no response.
I think get gaze data is kind of sufficient for eye tracking. Do you have any other requirements for get gaze data like #blinks or diameters of the pupils?
Zhenlin