real3d v4 , yes it will come for os4. (only os4)
scala? , doubt it.. why? because its now 8 years since scala touched an amiga unless it was one of their service people out in the field.
but according to the latest interviews there is an remote possibility for such to happen (scala to appear back on the brand it was created for.)
as a last note , they dropped amiga because of the market, so lets hope the market gets stronger.
and for media vision, ok it might be good this new version but what i have seen of it before...wasnt much to shout over.