I'm speaking to the hardware developer at the moment - he's happy to help and has the full specs available for you but it depends on getting the permission of the Poseidon software developer - more news if/when I have it
Deneb is Zorro II/III with 3.x/4.x support and would also work with AROS 68k if they recompile the AROS Poseidon port for 68k (Olaf is looking into it).