Would you be interested in adding NPCs from the online articles on the WotC site to this? I'm going through them with a fine-toothed comb at the moment looking for information on places/locations, and could try to keep an eye out.
Actually, it's just Eyes of the Lich Queen and Forge of War. Dragons of Eberron comes out in October, and Stormreach will be released in the beginning of 2008, JSYK. That'll be it for 3.5 D&D. You could always tackle any Web Enhancements or articles on WotC's Eberron site, although I don't know if there's much there.
As an aside, I'm going to bump the WotC forum thread for the general D&D NPC list, too.
Actually, it's just Eyes of the Lich Queen and Forge of War. Dragons of Eberron comes out in October, and Stormreach will be released in the beginning of 2008, JSYK.