Almost nothing's known of the prototype apart from the fact that all the hardware works, XBOX Live ports can be done fairly easily, and it's running on a Snapdragon processor (the chassis is the year-old Samsung i8910, a Symbian device). The device was demoed at MIX, so this news is a couple of months old but it's still nice to see Samsung appears to remain committed to the Windows Phone platform, and we should see something from them in six months time. Meantime enjoy the video (there's another at Engadget).
"A planner is a gentle man, with neither sword nor pistol.
He walks along most daintily, because his balls are crystal."