Pssssshhhh, my LBS has some super-pimp, fully digital rolling-and-cutting machine. No clue who makes it, I think it was about $3500 or so, according to the shop owner.
You put the raw spoke in it, the machine cuts it to specified length and rolls the threads in one motion. It is ******.
That said, I really don't see how it's that much better than a manual machine...