Over at Mac World they quote analyst Charles Wolf: "I had a talk with Phil Schiller at the opening of the 5th Avenue Apple Store, and I asked him the question, "Will Apple include a virtualization solution in [the next version of Mac OS X] Leopard?" He said, "Asolutely not, the R&D would be prohibitive and we're not going to do it. Our solution is dual boot."

Called it back in April