http://www.thinknext.net/archives/2268
The website is legitimate, beacuse it's been posting these pictures ever since Milestone 1, with visible progress. However, Microsoft's unlimited resources and thousands of programmers have yet to produce anything different from Vista. The rumours are for a beta in December, and if this is the progress they've made since late 2006 then it won't change too much from this to final. And they'll sell it for full price.
All they've managed to do is screw up the UI and make it unfamiliar to their core customers (i.e. people who don't really know how to use a computer). They've done Paint and Wordpad with an Office 2007 ribbon. What does that achieve beyond forcing companies to retrain staff?
The only truly new feature I can see is that you can have widgets on your desktop instead of the sidebar. That's been in KDE for a year now.
Microsoft, if we have to buy your OS, can you please make it worth the money to upgrade?