It's been out for several months now, and a new collectors edition should be out now as well. NWN.Bioware.com is the official site for the game. The DM part is partially true, though it was not as easy as I had hoped for. The tools that come with the game are amazing though for allowing more adventures to be created.

Pick it up if you enjoyed Baulders Gate or similar games. This goes beyond those with it's newer look, and internet capable play.