Apple's iPhone 6 has been one of the most anticipated phone releases of the year. A number of rumors have been circulating about the new device, including a release date which keeps changing. This week, we received a major clue about the release.

German phone company Deutsche Telekom has told customers they can expect the iPhone 6 on September 19th. DT gave this information to their call center staff, "to let customers know the date in a bid to stop them swapping operators." 

The date does seem like a definite possibility. Historically, Apple launches their new iPhones on Fridays, on which September 19th falls. The iPhone 4S was released in October, but the iPhone 5S was released on September 10th and the 5 on September 12th

In April, Taiwan’s Business Times was alleging that there were battery production issues, pushing back the launch. This could have led to two iPhone launches, one for the larger phone and another for the smaller device. The new release date information makes this option more likely. If that is the case, we could see the 4.7- inch device out in September and the 5.5 inch closer to the holidays. 

Of course, Apple could also pull a fast one and release both at once after their Worldwide Developers Conference next week.