GRID drivers for future XenServer-hosted Linux VMs?

Citrix has introduced a preview for Linux VMs for XenServer, which is a sensible offering for the users whose software is designed for and sometimes runs better on a Linux platform. Can anyone comment on where NVIDIA stands in terms of providing the driver support and at this point, for what potential Linux variants?

Details at:

I fully realize it may be early to ask and there well may be non-disclosure issues in effect, but I thought I would ask, anyway.

Thanks in advance,

Citrix aren’t supporting 3D features in the preview Linux VDA, it will come later.

"In the future, the HDX technology for hosted Linux apps will continue to evolve to enable even the most demanding GPU-based graphics applications"

There are already Linux passthrough drivers for GRID available for download today and vGPU could be developed if we see the demand.