Update: September 12th @ 12:08pm EDT
A short video has just leaked online. The screenshots cover more, but obviously as still images. It's a good idea to check out both.
Computerbase.de (linked above in "yes") claims to have access to Windows 9 Technical Preview Build 9834. This should be close to the pre-release that is rumored to be public later this month (again, if rumors are accurate). It seems to be focused on desktop usage, as rumored, but still is uncomfortably close to Windows Store and its certification requirements.
Image Credit: Computerbase.de
There are some significant changes over previous versions, from virtual desktops to a nearly borderless window look and feel, seemingly be default (saving probably about 8-10 pixels per window in width and just as much eyesore). This makes me wonder how true borderless apps (RDIO, GitHub for Windows, and Blizzard's Battle.net Launcher are examples) will play with these new styles. One of the main glitches that I have with Windows 7 is when something kicks me out of Aero and most of the non-standard styled windows freak out in one way or another (Trillian and Firefox being the most obvious offenders).
Maybe, just maybe, we will be able to get our hands on it later this month or early next month.