*apparently* there is an ISO floating around the Internet pretending to be MacOS X for Intel x86. Some people are reporting that this is a complete hoax. As the actual torrent file just contains the string "GNAA" over and over again. Attached is an screenshot that I found posted on engadget.
I am sure that even though Apple have a copy of MacOS running on an Intel system they would still be using some proprietary BIOS, even if all the hardware is that same.
We're probably going to have to wait a bit longer!