Here are the details straight from the official site www.tera-online.com for the last and final round for the closed beta tests.
Closed Beta Test 5: April 6-8
Our fifth closed beta will bring it all together: the search for Elleon, the battle against the Cult of Lok, and the promise of more to come…
Closed Beta Test 5 Information:
Maximum Level: 38
Character Slots per Server: 3
Servers: Arachnaea (PvE), Serpentis Isle (PvE), Dragonfall (PvE),
Valley of Titans (PvP), and Jagged Coast (PvP)
Duration: Friday, April 6 at 12:00 PM Pacific to Sunday, April 8
at 11:59 PM Pacific
For all those who don’t know, every CBT has a contest of some sort that is going on. They want you to be creative!
Be creative, be smart, or be lucky in one of three contest series being held during our final three closed beta tests. Capture footage, design infographics, cut videos, or simply play your characters to the level cap for a chance to score prizes from Logitech and En Masse Entertainment!
For CBT 5, they want you to answer the question: “what is TERA?” through a narrative machinima video.
Do this and you might just win some Logitech goodies! Here are the submissions details and rules.
So if you are looking to get ahead with Tera information, I would recommend you to take a look at this compilation of Tera leveling strategies.