Some of the rumors on the Internets are easier to vet than others. You can tell it's shopped because of the pixels, the claim is completely outrageous, or maybe a PR person is nice enough to come out and say something.
Digital Foundry, though, dug up a weird one.
A post appeared on the AssemblerGames forums advertising a Durango devkit for the low-low price of $10,000. The Durango is, of course, the current codename for Microsoft's follow-up to the Xbox 360.