Accurate chipset cloaning is very time consuming. If they are to make a standalone board without using open source code, then they have a lot of work ahead of them. The downside of using GPL code is then they must release the CPU source as well, which seems unlikely. Perhaps they have already done all this groundwork from the Natami days.
/MikeJ
I recently read that a lot of AGA software did run on the Natami so the groundwork was done already.