A coder by the name of iPhoneTom has created a new form of bootloader that truly emulates EFI rather than just bits of it using DUET. UEFI, as it’s called, loads Apple EFI firmware modules giving a true EFI bootloader. Currently it has to be loaded off a specially formatted USB stick but progress is being made fast on this.

The bootloader also allows loading of custom DSDT tables and will let you boot retail DVD and vanilla installs. One drawback is the lack of support for AHCI SATA drives at the moment however this should be integrated in the coming months. Check it out here and in the #UEFI-Boot IRC channel.