Bioware has announced an expansion to the Neverwinter Nights. See the following link for the announcement:
http://nwn.bioware.com/shadows/
I'd like to quote one interesting bit, however. The emphasis is mine.
Neverwinter Nights: Shadows of Undrentide will include a new 40-hour single player campaign as well as game features new to Neverwinter Nights, such as additional D&D™ skills, feats, classes, monsters, weapons and spells. In addition, the pack will include two new tile sets and other assets for use in the Aurora toolset that will enable amateur module designers to create completely different worlds.
Leo
