We've successfully pushed the new voice chat feature out to the Test server for users to play around with and provide feedback.
Everything went really well, except that we noticed while the client was being pushed to the patcher that the help files describing the new voice chat feature were missing (quickly remedied).
Zoltaroth, Rothgar and myself all hopped onto the Test server and invited people into a custom channel. Players had very few issues getting set up and chatting and we enjoyed talking to them rather than typing! Users really seemed to enjoy it and had great things to say about it (while providing good feedback too).
Feel free to hop on the Test server and give it a go!