Here's some news that I just happened across on GottabeMobile's site. It's an article about if and when a 32GB model will arrive on Verizon's shelf. I didn't copy the whole article, just the interesting part:
"At this point, while it seems Verizon is set on working with Samsung in an effort to offer the device, there may not be as much of a use for it in the days ahead. That’s because Samsung has issued an update to its international Galaxy S4, enabling support for applications on the microSD card slot. This should allow owners to free up more space on the internal storage and make the 16GB model a little more attractive than it was before."