You guys really don't get how this stuff works. There won't be a redesigned iPhone 4, I can almost guarantee that. Remember when before the release of the iPhone 4, there were rumors that because the redesign was so significant, Steve jobs had prepared a less modified version, closer to the iPhone 3GS, in case of a problem? Do you guys remember these rumors, well it's clear they were true because APPLE knew that this design has issue but jobs continued to push it out.
Anyways regarding a redesign of the iPhone 4, you guys forget that phones need to go through several stages before being mass produced. Assuming apple even knew about this 2 month before the launch of the iPhone 4, the earliest they can release a revision would be end of this year, early next year. Look at the version hone rumor, they are still in the second last stage of release, that would mean that it would have a revised antenna design.
As for the current design, apple COULD add a small change such as a coat or insulator to ease the pain but it CANT redesign without going through all the stages again and getting FCC approval. Even the coating/insulation would need to be FCC approved most likely. Don't expect a redesign maybe a slight tweak for the current design, if the verizon version gets a redesign is also just rumors.
Phones go through years of testing and approval, when they released the iPhone 3GS they were already in the initial steps of iPhone 4. When they released the iPhone 4, they were preparing a iPhone 5 and maybe a modified verizon version. Soon somewhere between iPhone 4 launch and preparing of iPhone 5, they will start looking into iPhone 6. What I'm trying to say Is that iPhone 4 has NOT been started AFTER iPhone 4 but maybe a year BEFORE it if not more and so on.
Thanks
AE