For the adventuresome geek, with a spare computer lying around to load a fully functioning Windows 8 preview:
http://windows.microsoft.com/en-US/windows-8/download
When you download Windows 8 Release Preview Setup, the following happens:
Windows 8 Release Preview Setup checks your PC to see if it can run the Release Preview, and provides a compatibility report that you can save or print (make sure your devices are connected to your PC and turned on before you run the Setup program). The Setup program then selects the optimized version of the download (up to 25% smaller) that is right for your PC (32-bit or 64-bit).
The built-in download manager lets you start, stop, and resume the download at any time.
Once Windows 8 Release Preview is downloaded, you choose how and when to install it. You can install on the current drive or you can make an ISO or bootable flash drive for installing Windows 8 Release Preview on another partition, virtual machine, or another PC (requires Windows Vista or Windows 7).
(or)
Direct to ISO Image download links (64-bit and 32-bit versions):
http://windows.microsoft.com/en-US/windows-8/iso
If you create ISO installation media, start your PC from the media, and then install
Windows 8 Release Preview, you'll need to enter this product key:
TK8TP-9JN6P-7X7WW-RFFTV-B7QPF
Windows 8 FAQ:
http://windows.microsoft.com/en-US/windows-8/faq
