"TeamSpeak 3 continues the legacy of the original TeamSpeak communication system previously offered in TeamSpeak Classic (1.5) and TeamSpeak 2. TeamSpeak 3 is not merely an extension of its predecessors but rather a complete rewrite in C++ of its proprietary protocol and core technology.
With over seven years of experience and leadership in the VoIP sector, our engineers have created a flexible, powerful, and scalable solution granting you the ability to customize and tailor your voice communication needs any way you desire. New users and TeamSpeak veterans alike will now enjoy a completely new experience in voice communication using TeamSpeak 3's unmatched functionality and powerful new features."
Why is this good news? Don't forget you can setup a TeamSpeak server for free, while Ventrilo is limited to 8 slots in its free version. That's something I can host on the VPS! The reason why we didn't use TS2 before was that it wasn't the voice communication everyone was looking for; TS3 better be good!
Source:
www.teamspeak.com