TeamSpeak 3 Client 3.0.16 (2014-08-01 13:08:58)

The new Icon Pack option is great. But it's horrible to restart TS3 everytime, when you change the Icon Pack.
I think the best way is, to add a preview-button. I think it will be hard to code a preview with the main GUI. So the best way is to open a new window that simulate the GUI to check the new design.