http://www.idealindustries.com/prodDetail.do?prodId=spliceline&div=0&l1=push-in

They handed out a few of these at that ECF meeting where Bryan did the swimming pool talk.

There has been an interesting conversation over on ECN forum about it.
One interesting thing is in the literature (specs PDF)



We allow that now?

The other thing is they are talking about "prefab" boxes and show a made up box with 3 pigtails sticking out and a MC coming toward it, implying you bring in the box made up and just plug it in.
How does the inspection process work on that? At the rough, all you would have is a wire. Then the next time you see it, everything is installed. If you have to take it apart for the inspection, where is the saving of prefabbing the box?