http://www.engadget.com/2011/09/13/windows-8-developer-preview-when-and-where-to-download/
I take it you've downloaded and played with it a bit.

I was tempted, but I'm afraid the newest machine I have is a bit too old and specific to attempt OS installs without a good list of drivers.
It's a Samsung Q1-U and actually runs Win7 pretty well once you get the Vista drivers from Samsung on board.