Apple (NASDAQ: AAPL) lives and dies by the iPhone these days, so it's a good thing that the mother of all smartphones should be rolling out in a couple of months. Shares of Apple hit an all-time high last month, not necessarily because of what it's done in the past; it's more that expectations are high for the iPhone 8 to be a bar-raising rollout.Fiscal 2018 will be a big year for Apple, and there's little reason to think that the next iPhone won't live up to the hype and recent stock gains.