Checking out the local news sources, we came across this interview yesterday with Turbine's CEO Jeff Anderson:

Shack: Can you give me an example of some of the new monster play mechanics in Book 10, or is that still being worked out?

Jeff Anderson: Well, you'll see that the raid mechanics that we have built into monster play are really going to go through a big upgrade. We're going to provide a lot more--I'm trying to think of a good way to describe them--multiple objectives to the same instance? Today, there's really one objective when you grab a castle or a keep--it's going to defeat the head boss. I think we've got some pretty exciting upgrades. You're going to be able to go into the game and get bonus level characters, so that you can go in and start playing as some of the elite monsters. I could tell you more about that, but I think we're going to wait another 30 or 60 days or so before we start explaining that. I'd love to sit down in another 30 days and tell you about how you're going to be playing... and I'll kind of leak this one to you, but you're going to be able to play as massive trolls in the game, as one example. We can go out there and just start destroying big swaths of land and tearing up the world. And that's great. People love monster play, that's what they're excited about. But those kinds of upgrades are coming down the pipe, and we're looking forward to adding more of those.

Trolls? Trolls! That is awesome!

Head on over to Shacknews and read the rest of the interview including some juicy info on player housing.