:D  Awesome.

Coming in 2.2.0: Integrated voice chat.

Tigerclaw, who I've never heard of either-- is he a dev? He says he's "in a whole other building than the CMs"-- has bad news for all of those Teamspeak and Ventrilo hosts. Apparently come 2.2.0, you won't need to run any extra programs, as players will be able to speak to each other via the normal client. Tigerclaw also says a PTR for the patch is upcoming, but he definitely does work for Blizzard: he doesn't give any clues at all as to when this might happen.