I found this on brickseek, went to my local Lowe's and picked up three.
Very hard to find though. The employee needed to use a ladder and they were hidden in a box with just a number identifier: 505522
Says Iris hub but instructions say for any z-wave hub.
[Edit] I added pictures of the box
[Editx2] I found them above the smoke detectors that were on display. They were high on a shelf. For those trying to find them, try looking up and for the 505522 on the box, maybe?