I've been arguing about this over at carspyshots for the past 2 days now.

I do believe it is the new E70 dash, however Siemens has switched out some parts (from the center console for example) to hide its true identity.\

Steering wheel is pretty much proof, as well as the cutout for on the mule for the cupholder.

Someone brought up on carspyshots.net that Siemens often pulls dashboards from BMW to do design studies and uses bits and pieces here and there... I can't imagine this being any different..