Scott- if history is an indicator and only part of the time it is, Apple will go higher on a run up to the 12th and then drop off. Last year with the 4S announcement that didn't happen. If interested your best bet is to study the trend and probability of it happening this time by looking at the way it moved during these announcements. Personally, I find trading Apple around a core position is a better strategy, meaning that about 80% of my holdings is locked in for long term growth. For income tax bracket reasons I need to get bigger gains than what happens in an Apple announcements to offset the tax penalties as I'm not trading in my Roth IRA on Apple. For that reason I'm pretty much done trading Apple for the year.
A good way to tell is how much negative news comes out about Apple's future. These guys have hidden agendas to cause Apple to drop as they need to cover their short positions or get slaughtered. I don't short stocks but recognize the strategy the short traders use. It's insidious. I wish it were made illegal.
The simple answer to your question for long term is a few analysts are predicting $900 a share in 12 months assuming the current earnings remains constant, higher if it grows and, of course, lower if the earnings falls off. Then, some are saying Apple has hit a wall, but they have been saying that for 4 years! Stock math isn't neat like engineering.