This is genius. A digital sensor that fits where the film magazine would and adapts a conventional ARRIFLEX 16SR into a digital camera. Made by the same folks that do the SI-2k.
A few cursory Google searches is not turning up any more about this, but I’m going to keep my eyes and ears open. Depending on the price and the sensor used, this could be a phenomenal way to get high-quality film-like images.