
Recently, massively.com got their hands on some seriously cool information about the upcoming Mines of Moria expansion. The link to the full article is below, but here's a summary of the tastiest bits.
You can supposedly only work leveling on up to 6 legendary items at once, but there doesn't seem to be a restriction on how many you can own. If this is to be taken at face value, it might be possible to have your entire set of gear eventually be fully-leveled legendary items, which would no doubt have a great impact on your character's effectiveness.
Players who purchase the expansion will be treated to TWO more character slots per server. Obviously this is so folks can try out the two new classes, but you don't necessarily have to use these slots for a Warden or Runekeeper.
Crafters will 'specialize' in a single craft from their list of 3 granted by their vocation. Crafters will have an additional tier of recipes to look forward to, but they can only advance their specialized craft to this point.
The Ettenmoors is getting a 'Capture the Flag' objective where you can seize a relic from the opposing side to grant buffs to your side. Also, whichever side has less players will receive an additional buff to help even things out.