In case you didn’t know, the two new arena maps that where being released with WotLk actually went live in the latest patch:

Netheara

With the latest patch release, we’ve added two new arenas: the Dalaran Sewers and the Ring of Valor in Orgrimmar. These arenas offer new obstacles and challenges for strategy savvy players. The [...]

Project Lore’s Death Knight special continues as Bigwang infiltrates the Scarlet Crusade and brings news to the Lich King.

Day Seven of Ten Days of Knight: Tauren Death Knight Bigwang does some interrogation and then looks for more clues about the Scarlet Crusade.

Day 6 was posted yesterday and Bigwang is back to killing the Scarlet Crusade:

Phase 4 of the Scourge Invasion brought to live servers Tenris Mirkblood, a new boss in Karazhan. Here are his drops along with some video of the encounter and the guitar, um, axe that he drops. (pictures via MMOC)
Loot Table:

Arcanite Ripper:

Vampiric Batling (one for everyone in raid)

Badge of Justice x2

The cool part about the Arcanite [...]