If I recall correctly, the Vampire boards are open sourced hardware. The "problem" is the expanded Apollo core that is proprietary. It may seem that the Grand Plan is to attempty to create a new de-facto proprietary 68k CPU for Amiga, a CPU core that can be licensed by hardware manufactorers from Gunnar.
Only the first version is. Vampire 600 V1.
But at least one more (kipper2k) other then Igor is making V2 so i think he is open to have others making cards. Maybe by license.
