In this interview at GameSpot, Feargus Urquhart from Obsidian Entertainment talks about the development of Neverwinter Nights 2 and Obsidian's relations with BioWare. He also answers a few questions about the previous Black Isle and BioWare non-D&D titles Fallout 3 and Knight of the Old Republic 2.

You mentioned NWN2 will have "a massive single-player campaign." How massive are we talking?

We haven't really set on how "massive" the single player campaign is going to be, but it will definitely keep people busy for a while. If I had to pick a goal at this point, I would say that the campaign should take between 40 and 60 hours: 40 hours if the player is just trying to crush their way though it, more than 60 if they are stopping to smell the flowers. We have a lot of experience here at Obsidian at making rich single player RPGs, and we are going to apply every ounce of that to NWN2.

You mentioned that you are planning to make "many new upgrades and enhancements" to the BioWare-developed NWN engine and the Aurora Toolset. I assume that means NWN will run on the same engine--is that true?

Actually, no. We are going to be changing a lot of how the art assets work in the engine, so this will break the usage of the original NWN's art assets. However, we are going to be retaining a lot of how other things work, so things like scripts and dialogs (and many other types of content) will most likely run in the engine after an import process in the toolset.

Read the whole thing at GameSpot (http://www.gamespot.com/news/2004/08/11/news_6104565.html).