Chilton told Gameinformer:
We've been able to do it in one sense, but not as much as I would like to in another sense. I would like for all patches to reliably have raid bosses. Our first Cataclysm patch didn't have raid bosses. From a raider's persepctive, it probably doesn't feel any faster than it did before. For us, where the biggest improvement is going to be in this cycle is in the actual expansion release. Traditionally we've only been able to do an expansion about every two years. We're really hoping to make a meaningful difference in that.