Tim Cook Sun Valley 2017
Apple CEO Tim Cook. Getty

Apple is expected to launch a redesigned and desirable version of the iPhone this fall, and some analysts hope that the sales “supercycle” it spurs could turn Apple into the first public company to be worth $1 trillion.

One question is when the “iPhone 8” or “iPhone Pro” will go on sale.

New iPhones typically go on sale in September, which means that a few days get included in the third-calendar quarter. But some analysts have warned that the iPhone 8 may not start shipping until October or later.

In 2015, for example, Apple sold 13 million iPhones in the first weekend after the iPhone 6S and Plus were available. Those were counted in the September quarter.

So when Apple reports its earnings on August 1, it will give a huge hint about when the iPhone 8 is going on sale. Apple CEO Tim Cook and CFO Luca Maestri will provide guidance for third calendar-quarter revenue. If it’s on the high-end, that means Apple’s…