Samsung working on a medium format digital camera system?

Going back to the picture of Samsung camera prototypes posted here yesterday - a reader reminded me about an old rumor that Samsung, Schneider Kreuznach and Alpa are working together to create the first, fully digital, medium format camera system. Why would Samsung have those large square camera prototypes next to their NX bodies? Can someone identify the silver lens attached to one of the square cameras? There are some similar Schneider Kreuznach lenses on eBay. You can check also schneideroptics.com.