With World of Warcraft's third expansion pack, Cataclysm, not far off from its December release, it has unsurprisingly been the focus of BlizzCon 2010's World of Warcraft coverage. However, Blizzard hasn't been shy about one fact: They're already beginning to look toward the fourth expansion pack, and they want it to be even bigger than Cataclysm.

I spoke to World of Warcraft senior producer John Lagrave earlier today and asked him how Blizzard hopes to top Cataclysm, an expansion pack where they are rebuilding the whole original world from World of Warcraft's launch. His response: "The thing we're trying to do in the next expansion is pretty f'ing awesome."

Lagrave told me about the Blizzard process for coming up with ideas for new expansions and new content, which involves early morning meetings where anyone can throw out crazy ideas. These meetings have already produced an idea for the inevitable fourth World of Warcraft expansion.

Lagrave explained: "We've now got a central idea [for the next expansion] that makes me happy and gets me excited, and it makes everyone else happy and excited. When everybody gets happy and excited, we know we're on to something. We don't know if it's going to be the final thing, but we know something good is coming. Will it top Cataclysm? I think it's pretty freakin' awesome. I'm really hopeful."

When I made a joke about how it wasn't huge or shocking news that they're going to do another expansion, Lagrave laughed as well. How many expansions will World of Warcraft have? He said, "I think we'll do expansions basically until [Blizzard president] Mike Morhaime says there's no need to do any more."

World of Warcraft fans have plenty to be excited about with Cataclysm coming out soon, but it's good to know that Blizzard is already thinking about how to avoid letting us down with whatever comes next.