The iPhone 5 running iOS 6 has been released now for several months. And no jail break has been officially released. Private jail breaks exist supposedly, but there seems a reluctance to release anything officially.
Obviously Apple has made this harder with each new iOS release and with the newer hardware, but are we reaching a point that as the deficiencies in iOS get plugged with each new update, that the need to jail break is less and less. Maybe this in turn makes it less a need for time to be spent jail breaking. Or have the youngsters who did all the jail breaking grown up and moved on to android.
Update. It seems that since writing this article, a jail break is in the wings when Apple releases iOS 6.1.
Update 2. iOS 6.1 was released yesterday and the untethered jail break is due to be released this weekend.