I got to look at and play with the unit at DEMA. It's a little smaller than the Xen, with a very slightly bigger screen. Despite looking rather solid, it's quite light (made of Delrin). The user interface is through two buttons that protrude from either side of the bottom of the unit. I didn't get to play with the menus, really, but found it interesting that the salesman who was talking to me could not find the function he was looking for after several minutes of playing with it. (One of the things I love about my X1 is that the menus are absolutely intuitive.)
The display was very bright. They are claiming 40 hours of use before you have exhausted the charge. The unit is sealed and rechargeable; if the battery fails, it will have to be sent somewhere to be replaced. I didn't get a chance to ask whether the US distributor will be able to do repairs on the unit, or whether it will have to be sent to Europe to get them done, but that's another thing to think about.
It can be bought as a bottom timer, and then software can be purchased to convert it to a Nitrox computer or a Trimix computer. IIRC, the price for the full loaded device was about $800.
My reaction was to be curious to see what the reports are as people purchase it -- the guy said they have been overwhelmed with orders, so folks should be writing some reviews pretty soon.