Press Tools => Options.
Select the Application tab on the left hand side of the window that appears.
Change the Update Channel drop down to Beta.
Press Apply and then OK to close the TeamSpeak options window.
After you have pressed OK, select Help at the top of the main TeamSpeak Window and press "Check for Update".
Your client should pop up a small window telling you there is a beta update available. Press the install button that has now appeared and your TeamSpeak client will be updated.
Select the Application tab on the left hand side of the window that appears.
Change the Update Channel drop down to Beta.
Press Apply and then OK to close the TeamSpeak options window.
After you have pressed OK, select Help at the top of the main TeamSpeak Window and press "Check for Update".
Your client should pop up a small window telling you there is a beta update available. Press the install button that has now appeared and your TeamSpeak client will be updated.
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