I am going to their customer NDA launch this afternoon in NYC.
WM7 has enough difficiencies before it gets started. Going to be a tough sell. No Flash, no multi tasking. No OCS client (WHAT?).
I don't know... But it will get a far shot. On the one hand they are touting the Xbox 360 Live integration, and on the other they tout the phenomenal SharePoint 2010 integration. So, what's it going to be?