Is it available? Will it ever be?
Any updates on this matter?
If its your personal decission to keep it closed its fine its your right, if there are any problems because it may infridge 3rd party code or some other problem that will keep it from getting opensource, please let us know.
I'm not a coder at all, but I found a project like this very interresting. Because you have to start with I think a low programming language, probably assembler and when having a succesfull loader, probably months of work. You bridge one of the most important gaps in Operating System interchange ability. Freeing the use of computers from their tightly internal drives tightly intergrated and locked to their OS's. So people will have a lower step of trying a other OS without killing their local OS.
I recently did some tutorials about making you own bootloader, and did some tests on virtual floppies. It's not more than a hello world with keyboard input, but I'd rather see it talk to a multi-card reader usb-device maybe a firewire device. I also took a peek at the usb-source files of the Linux Kernel, which is a lot above my knowledge, but it was just about getting a idea what it will take from scratch to talk to a USB host device and maybe further.