This just in, pictures of the Sennheiser HD850 headphones leaked!
My mother's sister's husband's cousin's, grandfather has a dog who works for Sennheiser. He recently sent me a picture of the HD850s.
Here they are:
Please keep in mind this is a VERY reliable source. It only took a couple of snausages and a cheese puff to convince him to send me this pic...
The USB interface intrigues me.