In TOS, [Khan is from the 20th century](http://en.wikipedia.org/wiki/Khan_Noonien_Singh#.22Space_Seed.22), rules a significant area of Earth for a while, and then leaves Earth at the end of that century. Is that still the case in Star Trek Into Darkness? If so, is the reboot occurring in an alternative timeline from our own (since we obviously have not yet seen a Khan dynasty)?