Many rumors and claims that Vienna was fake and it was not real, but they are wrong. Behold Windows Vienna, the early-beta of Windows 7 and it also has early concepts of Windows 7 and sound effects from Windows Longhorn as well. Vienna was in development in 2007, after 2006 when Vista hit the shelves. As you also can see from the Concept screenshot, there are development tools because they were still working on Windows Vienna. Another thing I would like add is that there is no watermark of Windows Vienna on the bottom right. Also there is a wheel of items that you can select items from, different themes from previous Window versions. This is REAL version of Windows Vienna (Sorry if I may, I don't know the Build number.) I have the copy of Vienna.