Ironically, there is a good product lurking here. If they opened up the back interface to allow anyone's back to hook up to the camera, there is more chance of success and breaking into the US market. If they keep it proprietary, as is their want typically (Sinar, Rollei), they will not break the Hassy/Leaf/Phase One groups in the US, and I fear the product will remain marginal.
If anyone has any influence with these guys, please please encourage them to think more broadly about market penetration in the US. They will have to give up some of their love of optimal system design, and the best system integration, which too often places them outside of the mainstream. But ifthey focus on flexibility of the interface, they may stay alive for another 10 years.
In the older days of film, it was OK to be outside the mainstream: there was sufficient market as you only had to buy your 120 film, pick your camera, and it didn't matter who made it. But now the rules have changed. Imagine each camera maker requiring their own type of film. That would never have worked, and so lo and behold, they standardized on 120 film pretty quickly. If Rollei/Sinar keep this proprietary, and don't get some real market penetration out of this new design, I worry that they won't get another chance.
Sadly Rollei was ahead of the digital curve with their scanning backs some years ago. What happened is that they were too early, and both too expensive and not flexible enough. Hope they don't make that mistake again.
There is a possible exception to this - if they price the Emotion backs low enough, they might persuade people to change horses and take on this whole system. That might work in Europe, and that might be enough market for them - its hard to know those numbers. If they need a big part of the American market, they need to know that it is conservative at heart, and getting American photographers to change backs, software and camera systems is pretty hard to do.
So here's a plea for an open "back" interface, to gain success, and keep this product line alive.