There is a video spreading via twitter that people are passing off as a sneak peak to Nokia Windows Phone 7 plans. It's well made but it is also a fake. I know this because I recognise the last segment showing off a dual screen phone as a concept shown by Microsoft two years ago. A quick search on the web confirms it. The front segment was also lifted from the montage shown at Nokia World 2010! Have a look below and judge for yourself.
Microsoft Office Labs Vision 2019:
Moral of the story? Do some research before passing on obvious fake stories.