Diablo III Interview

MTV Multiplayer keeps trickling down tidbits from Diablo III lead designer Jay Wilson, this time about the potential for a cow level.
Wilson: [laughs] We don't really know at this point. I really like the idea of secret stuff that '˜Diablo II' put forward, but it's not the kind of thing we would decide this early. But if we have something, I can assure people will be happy with it.

I will say the thing I liked about the cow level was that it wasn't just fluff; there was stuff that you could do there that actually had purpose within the game. The thing I didn't like about it was that it almost replaced part of the game. And so, if we looked to add something like that, we'd be a little smarter about it. We would want it to have a function within the game, but we wouldn't want it to replace any core content, which is something that I think the cow level really did.