Hi!
Just got this via e-mail, and used on a new account to test if it works. And it does, so have fun till launch!
"Hi Adventurer!
Welcome to the TERA Open Beta test. Starting on 19th April, this is a limited time invitation to step into the world of TERA before its official release on 3rd May. Everyone can play, even if you already used a CBT key from a previous weekend.
YOUR TERA OPEN BETA KEY IS:
TERABETA
HOW TO START YOUR TERA EXPERIENCE:
Go to http://account.tera-europe.com and login or create your TERA account.
Follow the instructions.
Press the "enter code" button.
Enter the „TERABETA“ key.
Open your account overview.
Download the client.
Should you encounter any problems, please don’t hesitate contacting our support team on Support Home Page.
See you on the Open Beta!"