While this piece of news is for StarCraft 2, Battle.net 2.0 will also be part of the Diablo III multiplayer experience (in fact, it will be the only multiplayer experience), and is still of interest. Frank Pearce said:
The basic RTS experience isn’t something that’s unfamiliar to us—right? We’re not worried about that. Some of the ambitious goals that we have in terms of the online experience and Battle.Net—bringing that to the next level, and contemplating the things that are going on in social networks and other online gaming services like Xbox Live—I think that’s where we’re going to have some of the biggest challenges.
All the goey details can be found over at our sister site StarCraftWire.net.