I met the camera (and Yair) on Tuesday at a Digital workshop in Fulham.
The hy6 is very nice indeed and I was very impressed by how the back attaches itself to the camera. More importantly however was the ergonomics - very well thought out, the camera did not feel uncomfortable in my hands at all.
I await production models with baited breath. In the meantime the 6008/emotion 22 will be more than enough to get by with - except for the pesky sync cord...