If they just meet basic expectations, it will beat $400. If they actually beat earnings? We'll see $500 in a week or two. We're trading at a tiny multiple that assume massive negative growth and ignores all the cash.
I just laugh as the stock goes down for no reason, and I buy more. This chart shows you everything you need to know: Apple is not only controlling the vast majority of the tablet market (Which is growing FAST), but is actually INCREASING its market share! None of the competition are even close because apple has a far superior product that nobody else can come close to matching.
So take a deep breath, dollar cost average and pick up some more shares, and watch the trip above $500 in the next few months.