Techradar posted a story that the iPhone 5 may support LTE globally

Apple needs to watch itself, however, as Samsung has threatened to sue if the Cupertino releases an LTE device. Samsung holds 819 LTE patents and while the iPad 3 has LTE connectivity, the Korean company seems to be lying in wait for the iPhone 5, likely as payback for the $1.05 billion in damages it's supposed to pay Apple in lawsuit damages. Apple has picked up several hundred LTE patents (434, to be exact) over the last year to cover itself against Samsung's potent patents, but that doesn't guarantee Samsung won't engage in a long, drawn out court battle with their rival.

  Report: iPhone 5 will have international LTE support