Got a hold of a 2010 S550 this week and managed to get splitview turned on. (The Splitview feature is *not* available yet so they disabled the feature on the command.) Basically everything is there except for a piece of glass called a diffraction grating which will actually optically split the single image into two views. what you see in the video is both images superimposed.

I made a quick video demoing how the feature will work.

http://www.youtube.com/watch?v=jQwLECbPZiE