It's also good news for customers, as it suggests that Apple is stockpiling a whole lot of units. Pre-orders begin in the US and elsewhere on June 15, and sales of iPhone 4 will begin in the US on June 24th. At the current rates, Apple could likely produce 9 million iPhone 4s by its fourth fiscal quarter of the year ending September.
Earlier this year, higher-than-expected demand caused shortages and delays for iPad customers. In fact, the international launch was pushed back about a month due to supply and demand trouble. That's definitely something Apple wants to avoid with iPhone 4.