Guys over at http://www.wmexperts.com/ have just published a walk through video of Windows Phone 7.
They also asked some pretty hard question like if they were going to release Zune for the Mac or if it would pull in updates from Twitter. However they pointed out that Windows Live currently pull in twitter updates so technically you can get twitter updates on the phone for people status. However the response to the Mac question was a decidedly coy saying just “hmmm”. Also when asked if the Zune subscription was coming to any other markets they said “we are not talking about that”.
Clearly from the video the OS is still a little buggy however it was a really great deep dive of the Zune and People Hubs.