When I read this I have to answer. That is the same as saying Aros or Morphos or Amigaos are no new product, they are only extending 3.1.
That is simply wrong!
Natami (and other FPGA-Projects) are not using the old circuits and just add a little, they reimplement the behavior. From the view of OS and Applications there is no difference, but in reality it is complete new.