a lot of people think that apple's secretive style means they are always planning something big. But how often are we actually shocked? Don't get me wrong, I love most of what apple puts out. But nothing about the iPhone 4 shocked me at all. It was all excising tech that had been around for YEARS. They just put it into a nice compact package. The retina display was the only thing that really caught me off guard, although it didn't really shock me that they were working on high quality displays.
The ORIGINAL iPod was, in my opinion, a breakthrough device. Same with the original iPhone and the iPad. But the evolution of these devices has not been shocking to me at all. Apple rarely takes risks on new technology. Instead they wait for it to come out, analyze it's viability in the market, asses it's shortcoming, and then find a way to re-brand it into something we all "have to have".
LTE is still pretty new. Every phone that has it right now is a battery hog. Apple will wait for either a new gen of chips that suck less power, or a new gen of batteries that last longer without being larger. That's my two cents. I don't expect it next week. That being said if they prove me wrong I won't be upset one bit!