You ask a god cuestion Mario but nothing is set except that we will keep improving Kray. If IES lights is on yours and others wishlist we will do it.
That's why we have choosen to go out in public beta so we can speed up development and get more feedback of what we should do next.
I hope you put them in your list.
Almost all renderes today have this option.
Would love to see ies. finaly hit Lightwave!
Ironicaly but, LIGHTwave without ies. lights