That is indeed GREAT AND EXCELLENT news! way to go! I wish someone puts it on a pci card and we can use it on our pc's or whatever platform!
though I must say I am a bit dissapointed that Dennis shows no interest in ECS/AGA or releasing the mmc->floppy drive as a standalone product... but it's good that he will release the plans, someone could expand and make better minimigs (030/060/aga/pci/etc!)
DENNIS U ROCK!