Evan Blass, whose Twitter account @evleaks has become a veritable repository for reliable leaks related to the mobile industry, says that he has “confirmed” Apple (AAPL) will start offering preorders on its next iPhone, believed to be known as the iPhone 7, starting on September 9. Blass didn’t reveal who his sources were.

So as with any Apple rumor, until the notoriously secretive company reveals its plans, the claim should be taken with the proverbial grain of salt.

Blass is the same leaker who reported on his Twitter (TWTR) account earlier this week that Apple’s iPhone 7 would launch on September 16. Again, Apple didn’t confirm that report.

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Rumors have been swirling for months over what Apple has planned for its next iPhone. Most rumors suggest the device will come with a minor design update that could see Apple eliminate the headphone jack in favor of two speakers on the bottom of the device. The company might also move the antenna lines used to connect to cellular networks around the edges and deliver updated components. Other rumors say Apple might even launch an iPhone 7 Pro model featuring dual camera lenses.

If recent history is our guide, Apple likes to hold special press events after Labor Day in September to unveil its new iPhone. At that event, it showcases the device and most importantly, says when iPhone preorders will begin, and when the smartphone will go on sale. Apple usually announces a new iPhone towards the beginning of a week, starts preorders on a Friday, and launches the iPhone a week after preorders begin.

The Blass timeline seems to fit that mold.

However, Apple has also launched its latest iOS mobile operating system version about a week before its new iPhone launches. The company has already said that iOS 10, its upcoming iteration, will launch in the fall, which would suggest a late-September launch for both iOS 10 and the iPhone 7. Apple made similar promises last year with the iPhone 6s and ultimately launched that handset on September 25.

It’s possible, in other words, that if Apple is being literal in its launch timetable, the company will hold off until later in September to offer its iPhone.

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But like anything else Apple-related, this is all speculation. It’s unlikely Apple will provide any concrete details until early September, when it’s expected to hold its special press event unveiling its next smartphone.