A lot of that I think is to keep the complexity of a single unit fairly low. On the older models, you could set up IR communication without too much hassle, an

A lot of that I think is to keep the complexity of a single unit fairly low. On the older models, you could set up IR communication without too much hassle, and it looks like these new ones can speak over bluetooth and wifi. I'm not sure if they support it out of the box, but I'll bet an API is forthcoming for microsoft's robotics studio or similar, and will make coordinating multiple units a bit simpler.