A new custom motherboard from Quo Computer promises to provide built-in support for multi-OS booting, including OS X
From The Mac Observer:
New Motherboard Promises Out-of-the-Box Hackintosh Support
From The Mac Observer:
Hackintoshes built on the platform will be able support Ivy Bridge CPUs, Firewire, USB 3.0, and Thunderbolt right out of the box.
New Motherboard Promises Out-of-the-Box Hackintosh Support