Based on leaked schematics, it is possible that the new iPhone will be available in 128gb storage option.
Whats more interesting is that the 32gb version may be dropped. So that means 16gb, 64gb and 128gb. If this sounds odd it is not as peculiar as you think. Many Chinese Phone manufacturers offer either 16gb or 64gb storage phones.
9th September cannot come quick enough to see what exactly Apple has in store for everyone.