Found via the site iMore we can’t substantiate any of this, but it goes along with what we have heard from reliable sources

which is why we’re posting this. 4G/LTE on the next iPhone is a given, and the info about the slightly larger screen seems to be about hedging bets more than anything really reliable. One thng is that they will have to maintain a certain resolution doubling paradigm if they want to make sure not to drive app developers crazy. That means the new iPhone likely would have a 1920X1280 pixel Retina Display screen, which would be just stunning we’re sure.

One item we don’t buy is the part about replacing the 30 pin dock connector . They say it’s set to receive a micro-dock to replace the traditional standard 30-pin dock connector. This will free up some space for additional parts that will be featured in the new iPhone. If his is true it will be a major departure from a decade old connector, will cause all sorts of issues, and will mean the eventual death of the 30 pin dock connector for future iDevices. I can’t say I would miss it, but we find this unlikely.

More to come as we hear things and can at least semi-validate them.