Yea, I have been waiting for this one too. I am a huge fan of the second and third expansions for neverwinter nights, as well as some of the player made modules out there.
The new game is more than just an excellent graphics upgrade. They have said they addressed most of the issues that the mod community had about the NWN editor, so that things like mixed tilesets (ie vegetation in dungeons) are now possible. I'm really looking foward to all the great mods that will almost certainly be coming out once this game is released.
I also trust that with all the expierence the official team has had, players wont have to trudge through a dreary and vanilla main campaign right out of the box, as they did with NWN1.