Wow .. LTE iPhone??!! And they're going to use the same design again? That's okay, I love the current from factor of iPhone. But some notes though:
1. I hope the next iPhone support LTE for more countries beside US and Canada. Don't be like the new iPad. What good LTE iPhone if it's only LTE able on a small part of the world?
2. If LTE is the main additional feature of the next iPhone, actually it's less and less tempting upgrading 4 to 4S. Some people said it wasn't that much of an upgrade, but now this???

A5X chip is a welcome addition, but nothing too sexy with additional GPU, I don't game a lot on my iPhone, it could make it runs out of juice whenever I need it for serious communication. Then I'm SOL.
3. LTE is only good if there are proper and enough bandiwidth limits. Current LTE plan for new iPad is ridiculous. You get 20 - 60Mbps in real world test and all you got is 1GB limit? It could run out in like 3 4minutes with that kind of monstrous speeds. Verizon is even more dangerous since it always give you free tethering. You can spend horribly lots and lots of data with tethering.
4. I really hope they come up with 4" screen, 3.5" is already small these days. Especially for a touch smartphone.
5. I doubt about Microdock connector, what kind of name is that? That way Apple would make a different connector between iPad, iPhone or even iPod? iPod shuffle connection already horrible and Apple almost don't care about it, so please don't make iPhone with microdock, maybe some kind of adapter could be useful though, but keep the dock.