There is a Warcraft 3 Q&A on MacWarcraft3, talking to Bill Roper and Rob Pardo of Blizzard about this upcoming 3D Warcraft RTS. There are questions about mods, the client/server system, spells, random matches, how they will prevent hacking, cinematics and of course some Mac related Q's. Thanks Blues News.

3. Will the B.net model be peer-to-peer or will the server host, like in D2?

We will be using a router model for Warcraft III where the Battle.net servers authenticate and monitor game play. This is different than the Diablo II model in that we will not be running and serving the games, thus requiring fewer resources from the Battle.net servers. The Client/Server model is not effective for Real-Time Strategy games since speed and synchronization are the cornerstones of any RTS network system and too much information needs to be sent between all of the players every second to make use of anything but a peer-to-peer based model.