For those wondering, it's mentioned in
Kotaku article what comes with NWN: EE for also Expansions; DLC's/Premium Mods:
Neverwinter Nights (Base Game)
Shadows of Undrentide (Expansion)
Hordes of the Underdark (Expansion)
Pirates of the Sword Coast (DLC)
Infinite Dungeons (DLC)
Wyvern Crown of Cormyr (DLC)
Oh, and it also comes w/ two soundtracks.