The thing with novels is that in the end, it doesn't really matter which edition's rules they are written under. Most of the "2nd edition" novels didn't adhere strictly to the 2nd edition rules anyway. There are lots of new Forgotten Realms novels that are coming out, though none of them are specifically "3rd edition".
There are also several Dragonlance novels in the works. Again, none of them are specifically "3rd edition".
After all... to the novel's characters, there is no such things as "rules". It doesn't matter to a thief that he is now called a "rogue". A cleric doesn't care whether he is casting spells from "spheres" or "domains". And a wizard tossing a fireball doesn't worry about which edition's rules he should be using.
Most of the novels exist independant of the rules. They are simply fantasy novels set in a familiar world, with the occasional reference to an aspect of D&D.