The pricing information for Apple's iPhone 6S has leaked ahead of its launch

We're going to know exactly what's in store for Apple's next iPhone on September 9, but a new leak gives us an idea of how much it will probably cost.

The new iPhone, expected to be called the iPhone 6S, is going to be priced the same way the iPhone 6 and 6 Plus were priced, according to the usually accurate Mark Gurman from 9to5Mac.

If you're buying a phone through a traditional two-year carrier contract, the 16GB version will cost $199, while the 64GB edition will be priced at $299, and the 128GB model will sell for $399.

The larger iPhone 6S Plus will be priced the same way as the iPhone 6 Plus: $299 for 16GB, $399 for 64GB, and $499 for 128GB.

The iPhone 5S will be free with a two-year contract when Apple unveils its next iPhone, according to Gurman. Apple will then discontinue the iPhone 5C.

The report also serves as another indication that Apple will keep the 16GB entry level model for the next iPhone. This contradicts previous reports that said Apple may boost the storage capacity in the cheapest variant to 32GB, like most Android phones.

It's unclear whether or not Apple will cut the price of the current iPhone 6 and 6 Plus, but analysts think there's a huge opportunity for Apple to keep iPhone sales strong if it does. Timothy Arucri from Cowen and Company, for instance, thinks that the iPhone 6 and 6 Plus' bigger screens are enough to keep them in demand even when the new phone comes out - especially if they're cheaper.

Apple previously considered making a smaller 4-inch version of the iPhone 6 but scrapped the idea, Arcuri also said. Evidence of a smaller phone, said to be called the iPhone 6C, had appeared in Apple's supply chain starting in January through March, but then disappeared. Arcuri speculates that this could be because company would rather reduce the price of its current generation phones than release a new cheaper iPhone.