a recent interview with Ten Ton Hammer, Lord of the Rings Online developers Aaron Campbell and Brent Schmidt answered some questions about the new content patch releasing this Tuesday. They explain a bit more about what to expect with Book 14, and ultimately with Mines of Moria, calling it "the largest single continuous underground space ever created in an online game."
However, a good chunk of this interview centers around the new Legendary Weapons that we'll see with Mines of Moria. These weapons will be something like a living part of your character, almost like a companion. These items will gain experience points with you and can be upgraded by your character. Be sure to read the complete interview for more details on what will most certainly be an exciting addition to the game.