Real3D will be ported for sure, it's a good app. but it will not really impress any pro users, for that you need one of the big four : Softimage, Maya, 3D Studio Max or Lightwave. The last one originated on the Amiga and it would be great to see it return. There used to be a time Newtek supported just about every platform available, now they just support Windows and Mac platforms. In short, I don't see it happen unless the new Amiga's are a BIG success. One can always hope...
Realistically though Real3D will be the 3D app for now.