Over the past several months, there have been a few rumors of Apple increasing storage capacities for the iPhone 6, perhaps doing away the 16 GB option at the low end and introducing a 128 GB model at the high end, at least for one of the two rumored models.
A set of schematics leaked in pieces over the past week and a half has included reference to various 16, 64, and 128 GB flash storage modules from several vendors for the iPhone 6, although it is unclear why there is no 32 GB option included on that list.
There are a few caveats, however, such as the possibility of this being a prototype or testing board using a 16 GB module not intended as a production option. Also, being a board for the 4.7-inch model, it is not yet known whether the rumored larger 5.5-inch iPhone 6 model will offer the same capacity options as the smaller model.
Article Link: 4.7-Inch iPhone 6 Logic Board Shown With 16 GB Flash Storage