What are you talking about?
If you were talking to me
Neverwinter Nights 3 = Neverwinter Online
I also quoted off the wiki that the game was going for co-op and scrapped to make a mmorpg instead.
You probably wont see another neverwinter game ever or at least for a very long time. All they have to do is throw another module on the game and call it a win. Making a new neverwinter would take away from the mmo that already making money.
Lets look at the recent advertisements: