Only works on Windows 8 dev preview. Not Windows 7.
An updated platform preview of IE10 for the Windows Developer Preview is now available for download. This IE10 preview adds even more support for HTML5 technologies, enabling richer Web applications with significantly improved performance. IE10’s hardware acceleration of technologies like SVG, CSS3 transforms and animations delivers faster rendering than other browsers, as highlighted in this short video.
System Manufacturer/Model Number Monkey Trainer Extraordinaire OS LCARS CPU My toilet habits are a private matter, thanks. Motherboard She finds stuff to do. Memory Not that I can recall. Graphics Card XXX rated Sound Card Huh? Monitor(s) Displays Monitors are lizards. Screen Resolution I haven't found one yet.
Keyboard Nar, it has other key friends. Mouse Cat PSU Again, toilet habits are a private matter. Case Pending Cooling 2 ice cubes. Hard Drives Sure isn't easy driving. Internet Speed Warp 9.9
Win 7 is, indeed, being left out of the IE10 Preview, for now.
Comment from ieblog in the link above:
29 Nov 2011 1:27 PM # We will release an IE10 Beta and Release Candidate on Windows 7 prior to IE10’s general availability.
Web developers interested in working with the new features of IE10 are encouraged to download the Windows 8 Developer Preview at msdn.microsoft.com/.../home.