Well, we've heard Zipp say they were working with Argon on new options. That may be it. As you said, it definitely looks like a Thru Axle and the fork blades look almost like they are touching that front disc.
It's very similar to what Felt and Hed did with the Super FRD frame. The front hub is narrower than standard, so you have to use the supplied Hed wheels. It also appears to run a TA.
I wonder if Argon altered the frame geometry to make it more sprint friendly or just the fork?