If it was good, wouldn't you think they'd schedule something a bit sooner than have the market speculate for a week ? That doesn't make very much sense. If the stock is tanking and they just want to reassure everyone that "All Is Well" wouldn't they just come out and say it instead of waiting a week ?
That leads me to believe they are working on crafting a clever outline and focusing specifically on what they want to say. Something must not be right, or they would just out and say, "Hey, we're cool. Everything is on track, blah blah blah"