A new video posted on iltasanomat http://www.iltasanomat.fi/digi/art-1288566945106.html (in finnish)

Key points:

-android applications will support true multitasking too
-the other half can be used like work / free time profiles, ring-tones, including different email profiles, overall look of the device, and even different apps (the other half is recognized wirelessly)
-the concept is build the way it technically supports any add-ons
-you can buy more of these other halves in future