I've been curious about Oathkeeper, the sword they mention in the Paladin questline that got stolen. If I remember right it's part of a trinity of swords that includes Curtana. Perhaps once 3.0 comes we'll get to obtain it

From in-game

"Long has the sacred sword Oathkeeper been bestowed upon the commander of the Sultansworn, vowed protectors of Ul’dah’s ruler. Yet it is not alone in its greatness. At the time of its making, three other swords were struck from the same ore and forged in the same fires. These brethren blades, Curtana among them, were then gifted to the three noble paladins by whose hand the brotherhood of the Sultansworn was founded."