A little late but release an update with so far incomplete information about the new badges TeamSpeak 3 which added with version 3.1.10
Already owning a myTeamSpeak account before date X. I don’t know the exact date at this moment but the date is in the past already.
The code for will be send to the e-mail that you did use to register the myTeamSpeak account and you have around 6 months to redeem the code.
No e-mail has been send at this moment.
Official TeamSpeak Gamer
Register a myTeamSpeak account after mentioned date X.
* It could be that you also get it when you already own a myTeamSpeak account.
E3 2018 - Winner
My last information for this badge was that this badge is for E3 attendees.
P.S. The last post is also updated and it has all the new badges.