Down 10+%, but I think people will jump in around 300-310 for sure. I'll have my buy orders set around $305, just in case it gets down that low. I feel sorry for all the people who have trailing stop losses on that stock, a lot of people are going to get stopped out.
As to AAPL's long term prospects, I think the stock has will peak after next earnings report. Institutions that had blind faith with Jobs will have a wait-and-see attitude with Cook or whoever eventually takes over. But long term, there's no way AAPL will succeed as it has without Jobs.