I don't think AR glasses are ready yet. I don't exactly follow the development super closely but to my knowledge there isn't a product on the market that can achieve the kind of 180 degree augmented reality Universal would need to make it an immersive experience. The AR glasses I'm aware of project a rather limited box of augmented content that is useful for things like phone notifications, but not for an immersive experience akin to VR.
The best there is right now is Hololens 2, and I just don't see Universal going for it.
Basically, the projection takes up on a small portion of your field of view meaning that the application of the content is very limited and it isn't ready for immersive experiences yet. Further the devices are all very clunky as well as expensive. $3,500 a piece and due to their electronics, they can't be mass-cleaned like 3d glasses.
Perhaps this is a planned future addition?