Sales are clearly a big area of focus. After all, there is a reason why revenue is the top line in the income statement. Apple is expecting revenue to be in the range of $49 billion to $51 billion in the coming release, which would imply a year-over-year increase of between 16% and 21% from the same quarter last year.
Investors need to take a deep look at the company's fundamentals from a long-term point of view as opposed to putting too much attention on Wall Street estimates and market reactions. However, it's worth noting that Wall Street analysts are on average calculating that Apple will make $51.07 billion in revenue, so expectations are moderately above the high end of the company's guidance.