Argon Queen part 2 is now live on Korean TERA servers, and over on the official forums, one player has been taking the time to answer any questions the community may have. The Q&A is still ongoing, and can be found here. For Warrior-specific questions, the poster also updated his Warrior guide with all the new info.
Q - What are battlegrounds rewards?
A - Battleground give you rep and tokens like the current reps in game, you can trade them for full sets of gear even tier 14 gear. Its pvp gear
Q - Where do you get the black edition sets?
A - Same vendor as the pvp rewards (same currency too)
Q - Do the two new instances have HMs?
A - Argon Meldithia has a hard mode (147 or 142 for easy), the other two do not Tier 14 seems to drop from both Argon hard mode and Shandra (not from the Timed one)
Q - How does warrior stamina feel
A - Feels like a lot of micro management so far, mana + stamina + combo points to babysit but tanking wise it feels natural enough, i will have a detailed video review soon
Make sure and check out the complete Q&A.