From the photos I've seen, he had a big screen in FRONT of him, out in the press area, that was being used as a teleprompter. In fact there's video on YouTube showing Rahm Emmanuel using a Blackberry (I also read those are illegal for WH staff to use because their texting can't be archived) during the conference...apparently affecting what was on the screen.
So he's gone from two little screens to one big screen. Well, he can't take that on the road very easily.