Here it is folks, the first teaser for Lord of the Rings Online: Mines of Moria, LOTR Online's first expansion. Though not included in the video, Mines of Moria features two new character classes, ten additional levels and hundreds of new quests. What's also notable here is that existing players can download the expansion or you can hit your local retailer to pick it up. Expect it this fall.
The expansion was actually a module, Lider. Just like the Book expansion from LotRO. It isn't a true retail "expansion" like Mines of Moria, ie: a new kind of country with which to explore. The only thing that the latest module did was open a new area, updating things across the existing areas, a high level dungeon and new playable class.
I'm sure if you compare the two side by side, LotRO has gotten the lion's share of content by Turbine.