It's a (new)start... one made necessary because of the outdated-ness of the original AmigaOS and it's derivatives and legal hassles surrounding it.
I would be against C=USA doing anything with MorphOS, AOS4 or AROS. That would be bound to fail from the beginning.
You'll love the statements about how they plan to fund AROS financially and be compatible with the OS from the beginning then. ;^)