I for one am excited about this game. I believe that the online element can add a lot to this type of game. Clearly, this is not an mmo (thank god) but a coop rpg. Why is this good? Because Dungeons and Dragons was MEANT to be played cooperative with other real people.
Ie, this game is like playing a real bout of D&D via computer. I personally dont play tabletop D&D since I dont know anyone who would, nor do I have time. I have however played possibly all D&D games ever made, (yes, even the one on intellivision), and have also enjoyed the single player games immensely. (Who can dislike baldurs gate of NWN2?).
This game will come out and possibly be really good, and then hopefully in the near future Atari also releases a game more like NWN2.