I just realized that generic titles like "An update from our CEO" always indicate bad news. When there's good news they put it straight in the title.
Since I hadn't left for the office yet, I was able to quickly change into my black "WTF?" shirt from Thinkgeek, and still make it in time to find out that our VP and four layers of management below him had been nuked from orbit.
Oh boy, I went through a couple of those during the dot-com bust.
Best thing to do is dial into the conference number, even if you are in the office, preferably from a bar down the street.