I've been reading on the forums that Target and Radioshack have been allowing 5S preorders. Skeptical, I called up and they confirmed that you can pre-order AND use a cross upgrade for it. Just pre-ordered a Gold 32gb in store to pick up day of launch
Just letting everyone know that it's possible and I personally think it's best since not many people know that Radioshack will be selling (even though I don't really feel super comfortable getting it from them.)