Thanks to fbartho for noting the news.
Given Apple’s experiences with software piracy, particularly the rampant software piracy that spread developer builds of Mac OS X 10.4 Tiger all over the Internet this past spring, Apple’s management from the top down knows full well that this developer preview will be in the hands of every kid with a cable modem within days of its release. Most of them will be able to install it on their own computers and run it and the full suite of iLife ’5 applications at full speed, and run most existing Mac software in translation.
As a result, Apple will give thousands, possibly millions, of people a taste of Mac OS X running full speed on their own PCs.
I'm looking for torrents right now. Most, from what fbartho tells me, are duds.
 I give up, can't find any...